Theoretical physics and astrophysics. Cosmology, field theory, particle physics, general relativity, quantum gravity, quantum mechanics, thermodynamics.

Present Position

• California Institute of Technology
  Senior Research Associate, Physics Department, 2006-present.

Previous Positions

• Massachusetts Institute of Technology
  Lecturer, Physics Department, 1996.
  Postdoctoral Researcher, Center for Theoretical Physics, 1993-1996.
• Institute for Theoretical Physics, University of California, Santa Barbara
  Postdoctoral Member, 1996-1999.
• University of Chicago
  Assistant Professor, Physics Department, Enrico Fermi Institute, and the College, 1999-2006.

Education

• Villanova University
  B.S. Astronomy and Astrophysics, B.A. Honors Program, 1988.
  Minors in Physics, Philosophy.
• Harvard University
  Ph.D. Astronomy, 1993; George Field, Advisor.
  Thesis: Cosmological Consequences of Topological and Geometric Phenomena in Field Theories.
  A.M., 1991.

Honors and Distinctions

• Villanova University Presidential Scholar, 1984-1988.
• Phi Beta Kappa, 1988.
• Villanova University Academic Medallion: Bachelor of Science, Astronomy and Astrophysics; Bachelor of Arts, Honors Program, 1988.
• National Science Foundation Graduate Fellowship, 1988-1991.
• National Aeronautics and Space Administration Graduate Fellowship, 1991-1993.
• MIT Graduate Student Council Teaching Award, 1996.
• American Physical Society Congressional Fellowship, 1997 (declined).
• Alfred P. Sloan Research Fellowship, 2000-2002.
• David and Lucile Packard Foundation Fellowship for Science and Engineering, 2000-2005.
• Malmstrom Lecturer, Hamline University, 2003.
• Resnick Lecturer, Rensselaer Polytechnic Institute, 2003.
• Second Place (with Jennifer Chen), Gravity Research Foundation Essay Competition, 2005.
• Villanova University College of Liberal Arts and Sciences Alumni Medallion, 2006.
• National Science Foundation NSF Distinguished Lecturer, 2007.
• Second Place, Foundational Questions Institute Essay Competition, 2009.

Activities

• Co-Founder and Contributor, Cosmic Variance blog (http://cosmicvariance.com/)
• Member, American Physical Society, American Astronomical Society, American Association for the Advancement of Science.
• APS Committee on Informing the Public, 2007-
• Executive Committee, APS Topical Group on Gravitation, 2004-2007
• Theory MRC Leader, Kavli Institute for Cosmological Physics, 2001-2005
• Roadmap Team Member, NASA Structure and Evolution of the Universe Theme, 2001-2002.
• JPL Advisory Committee on Gravitation and Fundamental Physics, 2002.
• Refereeing: Physical Review D, Physical Review Letters, Reviews of Modern Physics, Nature, Science, Astrophysical Journal, Astrophysical Journal Letters, Physics Letters B, Journal of High Energy Physics, Grant Proposals for NSF, DOE, NASA, Research Corporation
• Current Students: Lotty Ackerman (physics, Caltech, graduate), Heywood Tam (physics, Caltech, graduate).
• Past Students: Ethan Honda (MIT Physics B.A., 1996), Monica Guica (Chicago Physics B.A., 2003), Mark Hoffman (Chicago Physics Ph.D., 2003), Stefan Mendez-Diez (Chicago Physics B.A., 2004), Abhishek Kumar (Chicago Physics B.A., 2004), Eugene Lim (Chicago Astrophysics Ph.D., 2004), Jennifer Chen (Chicago Physics Ph.D., 2005), Ignacy Sawicky (Chicago Physics Ph.D., 2007).
• Photography has appeared in: CERN Courier, To Vima (Greece), Urthona Magazine (UK)
• Organizing:
  • Organizing Committee, Symposium on Why So Few Women in Science? (University of Chicago, 2005)
  • Organizer, APS April Meeting Symposium on Cosmological Constraints on Gravitation and Fundamental Physics (Tampa, 2005)
  • Organizer, AAAS Symposium on Understanding Dark Energy (Washington, D.C., 2005)
  • Scientific Organizing Committee, GR17 (Dublin, July 2004).
  • Program Committee, Moriond Conference on Exploring the Universe (La Thuile, Italy, 2004).
  • Program Co-Organizer, Kavli ITP Program on Superstring Cosmology (Santa Barbara, Fall 2003).
  • Co-Director, Short Course on Origin of Structure in the Universe, Center for Cosmological Physics (Chicago, September 2003).
  • Local Organizing Committee (Co-Chair), Cosmo-02 International Workshop on Particle Physics and the Early Universe (Chicago, September 2002).
  • Local Organizing Committee, CfCP Workshop on Cosmological Probes of Dark Energy (Chicago, 2001).
  • Organizer, EFI Mini-Symposium: String Theory and Experiment, University of Chicago (October 2001).
  • Working Group Co-Convenor (Astro/Cosmo/Particle Physics), Snowmass 2001: The Future of Particle Physics.
  • Scientific Organizing Committee, GR16 (Durban, 2001).
  • Session Organizer, Cosmic Genesis and Fundamental Physics (Sonoma, 1999).
  • Organizer, 13th Pacific Coast Gravity Meeting (Santa Barbara, 1997).

Courses Taught

• Harvard University
  General Relativity Seminar (graduate), 1989.
• Massachusetts Institute of Technology
  Physics 8.962, General Relativity (graduate), 1996.
• University of Chicago
  Physics 264, Spacetime and Black Holes (undergraduate), 2002, 2004, 2005.
  Physics 300, Introduction to the Teaching and Learning of Physics (graduate), 2002, 2004.
  Physics 363, Particle Physics (graduate), 2000, 2001.
  Physics 364, General Relativity (graduate), 2001, 2003, 2005.
  Physics 371, Introduction to Cosmology (graduate), 2001, 2006.
  Big Problems 246, Moments in Atheism (undergraduate), 2004

Research Publications

1. S.M. Carroll, G.B. Field and R. Jackiw, 1990, "Limits on A Lorentz and Parity-Violating Modification of Electrodynamics,'' Phys. Rev. D 41, 1231.
2. E.F. Guinan and S.M. Carroll, 1990, "Eclipsing Binaries as Astrophysical Laboratories and the Strange Case of Epsilon Aurigae,'' in Active Close Binaries: NATO ASI meeting at Kudasi, Turkey, ed. C. Ibanoglu and I. Yavuz (Kluwer: Dortrecht), p. 7.
3. S.M. Carroll, E.F. Guinan, G.P. McCook and R.A. Donahue, 1991, "Interpreting Epsilon Aurigae,'' Astrophys. J. 367, 278.
4. S.M. Carroll and G.B. Field, 1991, "The Einstein Equivalence Principle and the Polarization of Radio Galaxies,'' Phys. Rev. D 43, 3789.
5. S.M. Carroll, E. Farhi and A.H. Guth, 1992, "An Obstacle to Building a Time Machine,'' Phys. Rev. Lett. 68, 263; Erratum: 68, 3368.
6. W.D. Garretson, G.B. Field and S.M. Carroll, 1992, "Primordial Magnetic Fields from Pseudo-Goldstone Bosons,'' Phys. Rev. D 46, 5346; hep-ph/9209238.
7. J.A. Bryan, S.M. Carroll and T. Pyne, 1994, "A Texture Bestiary,'' Phys. Rev. D 50, 2806; hep-ph/9312254.
8. S.M. Carroll, D.Z. Freedman, M.E. Ortiz, and D.N. Page, 1994, "Physical States in Canonically Quantized Supergravity,'' Nucl. Phys. B423, 661; hep-th/9401155.
9. S.M. Carroll and G.B. Field, 1994, "Consequences of Propagating Torsion in Connection Dynamic Theories of Gravity,'' Phys. Rev. D 50, 3867; gr-qc/9403058.
10. S.M. Carroll, E. Farhi, A.H. Guth and K.D. Olum, 1994, "Energy-Momentum Restrictions on the Creation of Gott Time Machines,'' Phys. Rev. D 50, 6190; gr-qc/9404065.
11. S.M. Carroll, D.Z. Freedman, M.E. Ortiz, and D.N. Page, 1994, "Bosonic physical states in N=1 supergravity?'' Talk given at 7th Marcel Grossmann Meeting on General Relativity (MG 7), Stanford, CA, 24-30 Jul 1994; gr-qc/9410005.
12. S.L. Baliunas, ... S.M. Carroll et al. [27 authors], 1995, "Chromospheric Variations in Main-Sequence Stars. II,'' Astrophys. J. 438, 269.
13. S.M. Carroll, M.E. Ortiz and W. Taylor IV, 1996, "A Geometric Approach to Free Variable Loop Equations in Discretized Theories of 2D Gravity,'' Nucl. Phys. B468, 383; hep-th/9510199.
14. S.M. Carroll, M.E. Ortiz and W. Taylor IV, 1996, "Spin/Disorder Correlations and Duality in the c=1/2 String,'' Nucl. Phys. B468, 420; hep-th/9510208.
15. T. Pyne and S.M. Carroll, 1996, "Higher-Order Gravitational Perturbations of the Cosmic Microwave Background,'' Phys. Rev. D 53, 2920; astro-ph/9510041.
16. S.M. Carroll, M.E. Ortiz and W. Taylor IV, 1996, "The Ising Model with a Boundary Magnetic Field on a Random Surface,'' Phys. Rev. Lett. 77, 3947; hep-th/9605169.
17. A. Sornborger, S.M. Carroll and T. Pyne, 1997, "The Collapse of Exotic Textures,'' Phys. Rev. D 55, 6454; hep-ph/9701351.
18. S.M. Carroll and G.B. Field, 1997, "Is There Evidence for Cosmic Anisotropy in the Polarization of Distant Radio Sources?'' Phys. Rev. Lett. 79, 2397; astro-ph/9704263.
19. G.W. Anderson and S.M. Carroll, 1997, "Dark Matter with Time-Dependent Mass,'' in Cosmo-97, International Workshop on Particle Physics and the Early Universe, ed. L. Roszkowski (World Scientific: Singapore), p. 227; astro-ph/9711288.
20. S.M. Carroll, M.E. Ortiz and W. Taylor IV, 1998, "Boundary Fields and Renormalization Group Flow in the Two-Matrix Model,'' Phys. Rev. D 58, 046006; hep-th/9711008.
21. S.M. Carroll and M. Trodden, "Dirichlet Topological Defects,'' Phys. Rev. D 57, 5189; hep-th/9711099.
22. S.M. Carroll, 1998, "Quintessence and the Rest of the World,'' Phys. Rev. Lett. 81, 3067; astro-ph/9806099.
23. P.M. Garnavich, ... and S.M. Carroll [21 authors], 1998, "Supernova Limits on the Cosmic Equation of State,'' Astrophys. J. 509, 74; astro-ph/9806396.
24. S.M. Carroll and G.B. Field, 1998, "Primordial Magnetic Fields that Last?'' in 33rd Rencontres de Moriond: Fundamental Parameters in Cosmology, 17-24 January 1998, Les Arcs, France; astro-ph/9807159.
25. G.B. Field and S.M. Carroll, 2000, "Cosmological Magnetic Fields from Primordial Helicity,'' Phys. Rev. D, 62, 103008; astro-ph/9811206.
26. S.M. Carroll, S. Hellerman, and M. Trodden, 2000, "Domain Wall Junctions are 1/4-BPS States,'' Phys. Rev. D 61, 65001; hep-th/9905217.
27. S.M. Carroll, S. Hellerman, and M. Trodden, 2000, "BPS Domain Wall Junctions in Infinitely Large Extra Dimensions,'' Phys. Rev. D, 62, 044049; hep-th/9911083.
28. S.M. Carroll and L. Mersini, 2001, "Can We Live in a Self-Tuning Universe?'', Phys. Rev. D, 64, 124008; hep-th/0105007.
29. S.M. Carroll, J.A. Harvey, V.A. Kostelecky, C.D. Lane, and T. Okamoto, 2001, "Noncommutative Field Theory and Lorentz Violation,'' Phys. Rev. Lett, 87, 141601; hep-th/0105082.
30. S.M. Carroll and M. Kaplinghat, 2001, "Testing the Friedmann Equation: The Expansion of the Universe During Big-Bang Nucleosynthesis,'' Phys. Rev. D, 65, 063507; astro-ph/0108002.
31. S.M. Carroll, J. Geddes, M.B. Hoffman, and R.M. Wald, 2002, "Classical Stabilization of Homogeneous Extra Dimensions,'' Phys. Rev. D 66, 024036; hep-th/0110149.
32. S.M. Carroll, M.B. Hoffman, and M. Trodden, 2003, "Can the dark energy equation-of-state parameter w be less than -1?'' Phys. Rev. D 68, 023509; astro-ph/0301273.
33. S.M. Carroll and M.M. Guica, 2003, "Sidestepping the Cosmological Constant with Football-Shaped Extra Dimensions,'' hep-th/0302067.
34. S.M. Carroll, V.Duvvuri, M. Trodden and M.S. Turner, 2004, "Is Cosmic Speed-Up Due to New Gravitational Physics?'', Phys. Rev. D 70, 043528; astro-ph/0306438.
35. S.M. Carroll and E.A. Lim, 2004, "Lorentz-Violating Vector Fields Slow the Universe Down,'' Phys. Rev. D 70, 123525; hep-th/0407149.
36. S.M. Carroll, A. De Felice, and M. Trodden, 2004, "Can we be tricked into thinking that w is less than -1?", Phys. Rev. D 71, 023525; astro-ph/0408081.
37. S.M. Carroll, A. De Felice, V. Duvvuri, D.A. Easson, M. Trodden, and M.S. Turner, 2004, "The Cosmology of Generalized Modified Gravity Models", Phys. Rev. D 71, 063513; astro-ph/0410031.
38. S.M. Carroll and J. Chen, 2004, "Spontaneous Inflation and the Origin of the Arrow of Time," Phys. Rev. D, submitted; hep-th/0410270.
39. S.M. Carroll and J. Chen, 2005, "Does Inflation Provide Natural Initial Conditions for the Universe?," General Relativity and Gravitation, October 2005, p. 1; gr-qc/0505037.
40. S.M. Carroll and J. Shu, 2005, "Models of Baryogenesis via Spontaneous Lorentz Violation," Phys. Rev. D 73, 103515; hep-ph/0510081.
41. I. Sawicki and S.M. Carroll, 2005, "Cosmological Structure Evolution and CMB Anisotropies in DGP Braneworlds," astro-ph/0510364.
42. S.M. Carroll, 2006, "Is Our Universe Natural?," Nature 440, 1132; hep-th/0512148.
43. S.M. Carroll, I. Sawicki, A. Silvestri, and M. Trodden, 2006, "Modified-Constraint Gravity and Cosmological Structure Formation," New J. Phys. 8, 323; astro-ph/0607458.
44. L. Ackerman, S.M. Carroll, and M. Wise, 2007, "Imprints of a Primordial Preferred Direction on the Cosmic Microwave Background," Phys. Rev. D 75, 083502; astro-ph/0701357.
45. S.M. Carroll and H. Tam, 2008, "Aether Compactification," Phys. Rev. D 78, 044047; arxiv:0802.0521.
46. A.L. Erickcek, M. Kamionkowski and S.M. Carroll, 2008, "A Hemispherical Power Asymmetry from Inflation," Phys. Rev. D, 78, 123520; arxiv:0806.0377.
47. S.M. Carroll, S. Mantry, M.J. Ramsey-Musolf, and C.W. Stubbs, 2008, "Dark-Matter-Induced Weak Equivalence Principle Violation," Phys. Rev. Lett., submitted; arxiv:0807.4363.
48. A.L. Erickcek, S.M. Carroll and M. Kamionkowski, 2008, "Superhorizon Perturbations and the Cosmic Microwave Background," Phys. Rev. D 78, 083012; arxiv:0808.1570.
49. L. Ackerman, M.R. Buckley, S.M. Carroll, and M. Kamionkowski, 2008, "Dark Matter and Dark Radiation," Phys. Rev. D, 79, 023519; arxiv:0810.5126.
50. S.M. Carroll, C.-Y. Tseng, and M.B. Wise, 2008, "Translational Invariance and the Anisotropy of the Cosmic Microwave Background," Phys. Rev. D, submitted; arxiv:0811.1086.
51. S.M. Carroll, 2008, "What if Time Really Exists?", Foundational Questions Institute Essay Competition on the Nature of Time; arxiv:0811.3722.
52. S.M. Carroll, T.R. Dulaney, M. Gresham, and H. Tam, 2008, "Instabilities in the Aether," Phys. Rev. D, 79, 065011; arxiv:0812.1049.
53. S.M. Carroll, T.R. Dulaney, M. Gresham, and H. Tam, 2008, "Sigma-Model Aether," Phys. Rev. D, 79, 065012; arxiv:0812.1050.
54. S.M. Carroll, M.C. Johnson, and L. Randall, 2009, "Extremal Limits and Black Hole Entropy," arxiv:0901.0931.
55. S.M. Carroll, S. Mantry, and M.J. Ramsey-Musolf, 2009, "Implications of a Scalar Dark Force for Terrestrial Experiments," Phys. Rev. D, submitted; arxiv:0902.4461.
56. S.M. Carroll, M.C. Johnson, and L. Randall, 2009, "Dynamical compactification from de Sitter space," arxiv:0904.3115.
57. S.M. Carroll, H. Tam, and I.K. Wehus, 2009, "Lorentz Violation in Goldstone Gravity," arxiv:0904.4680.

1. S.M. Carroll, W.H. Press and E.L. Turner, 1992, "The Cosmological Constant,'' Ann. Rev. Astron. Astrophys. 30, 499.
2. S.M. Carroll, 1997, "Lecture Notes on General Relativity,'' gr-qc/9712019.
3. S.M. Carroll, 2000, "Cosmological Constant,'' Encyclopedia of Astronomy and Astrophysics, ed. P. Murdin (Institute of Physics Publishing: London).
4. S.M. Carroll, 2000, "Is the Universe Still Accelerating?'', Matters of Gravity 15, 29; gr-qc/0002027.
5. S.M. Carroll, 2000, "Cosmic microwave background anisotropies: tantalizingly close to expectations'', Matters of Gravity 16, 3; gr-qc/0009060.
6. S.M. Carroll, 2000, "TASI Lectures: Cosmology for String Theorists,'' Lectures at the 1999 Theoretical Advanced Study Institute at the University of Colorado, Boulder; hep-th/0011110.
7. S.M. Carroll, 2001, "The Cosmological Constant,'' Living Reviews in Relativity 4, 1; astro-ph/0004075.
8. S.M. Carroll, 2001, "Dark Energy and the Preposterous Universe,'' invited contribution to the SNAP Yellow Book; astro-ph/0107571.
9. D.S. Akerib, S.M. Carroll, M. Kamionkowski and S. Ritz, 2001, "Particle astrophysics and cosmology: Cosmic laboratories for new physics (Summary of the Snowmass 2001 P4 working group)," in Proc. of the APS/DPF/DPB Summer Study on the Future of Particle Physics (Snowmass 2001) ed. N. Graf, eConf C010630, P4001; hep-ph/0201178.
10. S.M. Carroll, 2002, "What Do We Really Know about the Expansion of the Universe?'', in Proceedings of the Second Meeting on CPT and Lorentz Symmetry, ed. V.A. Kostelecky (World Scientific: Singapore), p. 80.
11. S.M. Carroll, 2002, Review of Time Travel in Einstein's Universe by J. Richard Gott, Physics Today, July 2002, p. 60.
12. S.M. Carroll, 2002, Review of The Extravagant Universe by Robert P. Kirshner, Nature, 24 October 2002, p. 784.
13. S.M. Carroll, 2005, "Why (Almost All) Cosmologists Are Atheists'', Faith and Philosophy 22, p. 622.
14. S.M. Carroll, 2003, "Filling in the background", (News and Views on WMAP), Nature, 6 March 2003, p. 26.
15. S.M. Carroll, 2003, Review of Echo of the Big Bang by Michael Lemonick, Nature, 24 July 2003, p.373.
16. S.M. Carroll, 2003, "Quantum Gravity: An Astrophysical Constraint", (News and Views on Lorentz violation), Nature, 28 August 2003, p.1007.
17. S.M. Carroll, 2003, Spacetime and Geometry: An Introduction to General Relativity (Addison-Wesley).
18. S.M. Carroll, 2003, "Why is the Universe Accelerating?" Carnegie Observatories Astrophysics Series, Vol. 2: Measuring and Modeling the Universe, ed. W. L. Freedman (Cambridge: Cambridge Univ. Press); astro-ph/0310342.
19. M. Trodden and S.M. Carroll, 2004, "TASI Lectures: Introduction to Cosmology," Lectures at the 2002 and 2003 Theoretical Advanced Study Institutes at the University of Colorado, Boulder; astro-ph/0401547.
20. S.M. Carroll, 2004, "Insignificance" (Concepts essay on dark matter and dark energy), Nature, 6 May 2004, p. 27.
21. S.M. Carroll, 2004, "Cosmology Primer," http://preposterousuniverse.com/writings/cosmologyprimer/.
22. S.M. Carroll, 2005, "Dark Energy and the Preposterous Universe," Sky and Telescope, March 2005, p. 32.
23. S.M. Carroll, 2005, "60 Seconds: Extra Dimensions," symmetry, June/July 2005, back cover.
24. R. Bean, S.M. Carroll and M. Trodden, 2005, "Insights into Dark Energy: Interplay Between Theory and Observation," white paper submitted to the Dark Energy Task Force; astro-ph/0510059.
25. S.M. Carroll, 2005, "Dimensions Demystified", Review of Warped Passages by Lisa Randall and Parallel Worlds by Michio Kaku, American Scientist 93, 550, November-December 2005.
26. S.M. Carroll, 2005, "Cosmological Constant," World Book Online Reference Center, 20 October 2005.
27. S.M. Carroll, 2005, "From Experience to Metaphor, by Way of Imagination," Poetics Today, submitted.
28. S.M. Carroll, 2006, "Science in the Dock" (dialogue with Noam Chomsky and Lawrence Krauss), Science and Theology News Online, http://www.stnews.org/Commentary-2680.htm.
29. S.M. Carroll, 2006, "Welcome to the Blogosphere," APS News, May 2006, p. 12.
30. S.M. Carroll, 2006, "Time Before Time," Seed, September 2006, p. 43.
31. S.M. Carroll, 2006, "Review: The Trouble With Physics by Lee Smolin," New Scientist, 30 September 2006, issue 2571, p. 58.
32. S.M. Carroll, 2006, "The Universe, Too Quickly Toured," review of The Quantum Zoo by Marcus Chown, Science 313, 1391.
33. S.M. Carroll, 2006, "Dark Matter is Real," Nature Physics 2, 653.
34. S.M. Carroll, 2007, "Blogging for Physics," Physics World, Jan. 2007, p. 14.
35. S.M. Carroll, 2007, "Quantum Interrogation," reprinted in The Open Laboratory: The Best Writing on Science Blogs 2006, ed. B. Zivkovic (Lulu: Morrisville, NC), p. 123.
36. S.M. Carroll, 2007, "String Theory: It's Not Dead Yet," New Scientist, 19 May 2007, p. 25.
37. S.M. Carroll, 2007, "Dark Matter, Dark Energy: the Dark Side of the Universe," lectures for the Teaching Company, Sep. 2007.
38. S.M. Carroll, 2008, "Take the tube for the voyage of your lifetime," review of The New Time Travelers by David Toomey, Times Higher Education Supplement, 4 January 2008.
39. S.M. Carroll, 2008, "Pulling Power," review of The Universal Force: Gravity, Creator of Worlds by Louis A. Girifalco, Nature 451, 130.
40. S.M. Carroll, 2008, "The Universe is Structured Like a Language," "The Cash Value of Astronomical Ideas," and "Dark Matter Exists," reprinted in Ultimate Blogs: Masterworks from the Wild Web, ed. Sarah Boxer (Vintage: New York), p. 42.
41. S.M. Carroll, 2008, "Life-changing books: One, Two, Three... Infinity," New Scientist, 19 April 1008, p. 4.
42. S.M. Carroll, 2008, "The Rise and Fall of Time," in Year Million: Science at the Far Edge of Knowledge, ed. Damien Broderick (Atlas: New York), p. 253.
43. S.M. Carroll, 2008, "The Cosmic Origins of Time's Arrow," Scientific American, June 2008, p. 48.
44. S.M. Carroll, 2008, "Lost in Space," review of The Black Hole War by Leonard Susskind, The Wall Street Journal, 28 July 2008.
45. S.M. Carroll, 2009, "Being a Heretic is Hard Work," in What Have You Changed Your Mind About?, ed. John Brockman (Harper Perennial: New York).
46. S.M. Carroll, 2009, "The First Quantum Cosmologist," in The Open Laboratory 2008, ed. Jennifer Rohn (Lulu: Morrisville, NC), p. 54.
47. S.M. Carroll, 2009, "Our Place in an Unnatural Universe," in What's Next: Dispatches on the Future of Science, ed. Max Brockman (Vintage: New York).

• 1989
  • Harvard-Smithsonian Center for Astrophysics Theory Seminar
• 1991
  • MIT Center for Theoretical Physics Seminar
  • Brown University Physics Seminar
  • Harvard-Smithsonian Center for Astrophysics Theory Seminar
  • Villanova University Astrophysics Colloquium
  • Canadian Institute for Theoretical Astrophysics Seminar
• 1992
  • University of Alberta Physics Seminar
  • GR13 Conference, Cordoba, Argentina
  • MIT Center for Theoretical Physics Seminar
  • Institute for Advanced Study Astrophysics Seminar
  • Princeton University Particle Astrophysics Seminar
  • Fermilab Theoretical Astrophysics Seminar
• 1993
  • CfA/Tufts/MIT Cosmology Seminar (x2)
  • Brown University Physics Colloquium
  • Center for Particle Astrophysics (Berkeley) Seminar
  • Lawrence Berkeley Labs Theory Seminar
  • Harvard Astronomy Ph.D. Colloquium
• 1995
  • Penn State Center for Gravitational Physics and Geometry Seminar
  • Villanova University Astrophysics Colloquium
  • Tufts University Cosmology Seminar
  • Joint CfA/Tufts/MIT Cosmology Seminar
  • MIT Center for Theoretical Physics Seminar
• 1996
  • University of Virginia Physics Colloquium
  • Joint Harvard/MIT/Boston University Theory Seminar
  • Cornell University High Energy Theory Seminar
  • MIT Applied Mathematics Seminar
  • Tufts University Cosmology Seminar
  • University of Chicago Particle Theory Seminar
  • University of Chicago Relativity Seminar
  • California Institute of Technology Theory Seminar
  • University of Washington Particle Theory Seminar
  • Institute for Theoretical Physics (UC Santa Barbara) Theory Seminar
• 1997
  • Joint Harvard/MIT/Boston University Theory Seminar
  • Institute for Theoretical Physics (UC Santa Barbara) Theory Seminar
  • Contributed Talk, Cosmo-97 Conference, Ambleside, England
  • Imperial College (London) Theory Seminar
  • Institute for Theoretical Physics (UC Santa Barbara) Blackboard Lunch Seminar
  • California Institute of Technology Theoretical Astrophysics and Relativity Seminar
  • Invited Talk at UCSB Conference on CMB Data Analysis and Parameter Extraction
• 1998
  • Invited Talk at Moriond Conference on Fundamental Parameters in Cosmology, Les Arcs, France
  • University of Wisconsin-Milwaukee Physics Colloquium
  • Institute for Theoretical Physics (UC Santa Barbara) Blackboard Lunch Seminar
  • Harvard-Smithsonian Center for Astrophysics Theory Seminar
  • Case Western Reserve University Theoretical Physics Seminar
  • Invited Talk at Fermilab Workshop on Missing Energy in the Universe
  • University of Chicago Relativity Seminar
  • Northwestern University Astrophysics Seminar
  • Oxford University Theoretical Physics Seminar
  • University of Alberta Physics Colloquium
  • University of Alberta Gravitational Theory Seminar
  • Joint CfA/Tufts/MIT Cosmology Seminar (at MIT)
  • University of Chicago Astronomy and Astrophysics Colloquium
  • Contributed Talk, Cosmo-98 Conference, Monterey, California
• 1999
  • Invited Parallel Talk at APS Division of Particles and Fields Meeting, UCLA
  • University of Washington Astronomy Colloquium
  • University of California, Santa Barbara, Physics Colloquium
  • University of British Columbia Theoretical Physics Seminar
  • Rutgers University Theoretical Physics Seminar
  • Invited talk at the Centenary Meeting of the American Physical Society, Atlanta
  • University of Kentucky Physics Colloquium
  • Canadian Institute for Theoretical Physics Seminar
  • Northwestern University Physics Colloquium
  • MIT Nuclear and Particle Physics Colloquium
  • Fermilab Theoretical Astrophysics Seminar
  • Notre Dame Astrophysics Seminar
  • University of Wisconsin, Milwaukee, Relativity Seminar
  • University of Alabama Theoretical Physics Seminar
  • University of Illinois, Urbana-Champaign, Theoretical Physics Seminar
  • Invited Talk at Cosmic Genesis and Fundamental Physics, Sonoma, California
• 2000
  • Los Alamos National Laboratory Physics Colloquium
  • Los Alamos National Laboratory Theory Seminar
  • University of California Santa Cruz/Stanford Joint Theory Seminar (at UCSC)
  • University of Michigan Theory Seminar
  • Syracuse University Physics Colloquium
  • Syracuse University Relativity Seminar
  • Fermilab Physics Colloquium
  • Argonne National Laboratory High Energy Theory Seminar
  • Argonne National Laboratory Physics Colloquium
  • Advanced Study Institute on Techniques and Concepts of High Energy Physics Lectures
  • University of Wisconsin, Milwaukee, Relativity Seminar
  • Villanova University Astronomy and Astrophysics Colloquium
  • Stanford Linear Accelerator Theoretical Physics Seminar
  • University of Texas Particle Theory Seminar
  • Ohio State University Physics Colloquium
  • University of Maryland Relativity Seminar
  • Purdue University Theoretical Physics Seminar
  • Case Western Reserve University Physics Colloquium
  • Case Western Reserve University Particle Astrophysics Seminar
  • Penn State Gravitational Physics Seminar
  • Scuola Normale Superiore (Pisa, Italy) Theory Seminar
• 2001
  • University of Chicago Physics Colloquium
  • University of Minnesota Theoretical Physics Institute Seminar
  • Joint Harvard/MIT/Boston University Theory Seminar (at BU)
  • University of Wisconsin Physics Colloquium
  • Invited talk at Institute for Advanced Study Workshop on Galaxies and the Dark Matter Problem
  • College de France Cosmology Seminar
  • Invited talk at Physics and Astrophysics of Extra Dimensions, IAP, Paris
  • Invited talks (two parallel, one brief plenary summary) at Snowmass 2001 Workshop on the Future of Particle Physics
  • Parallel talk at GR16, Durban, South Africa
  • Invited talk at 2nd Meeting on CPT and Lorentz Symmetry, Indiana University
  • University of Illinois, Urbana-Champaign, Astronomy Colloquium
  • University of Notre Dame Physics Colloquium
  • Columbia University Institute for Strings, Cosmology and Astroparticle Physics Seminar
  • Invited Talk at Workshop on Cosmological Probes of Dark Energy, Chicago
• 2002
  • Contributed talk, AAS meeting, Washington, DC
  • Michigan State University Physics Colloquium
  • Invited talk at Aspen Winter Conference on Particle Physics
  • Center for Advanced Studies Seminar, University of New Mexico
  • University of New Mexico Physics Colloquium
  • Institute For Theoretical Physics, Santa Barbara, Colloquium
  • Fermilab Colloquium
  • UC San Diego Physics Colloquium
  • University of Florida Astrophysics Seminar
  • Argonne National Laboratory HEP Seminar
  • Invited Talk, New York State Section APS Meeting, Syracuse, NY
  • William and Mary Physics Colloquium
  • University of Maryland Astronomy Colloquium
  • Invited Talk, Carnegie Observatories Centennial Cosmology Symposium
  • Duke University Physics Colloquium
• 2003
  • Indiana University Physics Colloquium
  • Northwestern University Physics Colloquium
  • University of Illinois, Chicago, Physics Colloquium
  • Center for Cosmological Physics, University of Chicago, Colloquium
  • Invited Talk, Topical Session on the Physics of Extra Dimensions, AAAS Meeting, Denver
  • Florida International University Physics Colloquium
  • Goddard Space Flight Center High-Energy Astrophysics Seminar
  • CfA/Tufts/MIT Cosmology Seminar (at Radcliffe Institute, Harvard)
  • Invited Talk, Seven Pines Symposium, Minnesota
  • Invited Talk, AAS Meeting, Nashville, TN
  • Invited Talk, Decennial Conference, Center for Gravitational Physics and Geometry, Penn State
  • Invited Talk, Itzykson Meeting on the Early Universe, Paris
  • Invited Talk, Cosmology and Fundamental Physics Meeting, Marseilles
  • Invited Talk, American Linear Collider Workshop, Cornell
  • Invited Talk, SLAC Summer Institute Workshop
  • University of British Columbia Theory Seminar
  • KITP Blackboard Lunch Seminar
  • Columbia University Physics Colloquium
  • Renaissance Technologies Colloquium
  • University of California, Santa Cruz, Physics Colloquium
  • Invited Talk, National Academy of Sciences Frontiers Symposium, Irvine
  • KITP String Cosmology Program Seminar
• 2004
  • Space Telescope Science Institute Colloquium
  • Invited Talk, American Linear Collider Physics Group Workshop, SLAC
  • University of Wisconsin, Madison, Physics Colloquium
  • University of Michigan Physics Colloquium
  • Perimeter Institute Seminar
  • University of Waterloo Physics Colloquium
  • University of North Carolina Theoretical Physics Seminar
  • University of North Carolina Physics Colloquium
  • Invited Talk, NOAO Workshop on Observing Dark Energy
  • University of Rochester Physics Colloquium
  • Invited Talk, Mitchell Symposium on Observational Cosmology
  • Swarthmore College Physics Colloquium
  • University of Chicago High Energy Physics Seminar
  • Invited Talk, Meeting of the APS Division of Particles and Fields, Riverside
  • Brandeis University Physics Colloquium
  • Brandeis University Theory Seminar
  • University of Arizona Physics Colloquium
  • University of Illinois, Urbana-Champaign, Physics Colloquium
  • University of Pennsylvania Physics Colloquium
  • Johns Hopkins Physics and Astronomy Colloquium
  • Johns Hopkins Theoretical Particle Physics Seminar
  • Caltech High Energy Theory/Experiment Joint Seminar
  • UC San Diego Theory Seminar
  • Invited Talk, Philosophy of Science Association Meeting, Austin
  • Lund University (Sweden), Joint Physics and Astronomy Colloquium
  • Stockholm University, Physics Colloquium
  • Stockholm University, Theoretical Physics Seminar
  • Joint CfA/Tufts/MIT Cosmology Seminar (Tufts)
  • Invited Talk, Pacific Institute for Theoretical Physics Meeting, The Arrows of Time
• 2005
  • Invited Talk, Dark Energy Symposium, AAAS Meeting, Washington DC
  • New York University Theory Seminar
  • Goddard Space Flight Center Scientific Colloquium
  • University of Southern California Physics Colloquium
  • Lawrence College Scientific Colloquium
  • ESSENCE Collaboration Meeting Talk, Harvard-Smithsonian Center for Astrophysics
  • Invited Talk, IAP Colloquium on Mass Profiles and Shapes of Cosmological Structures
  • SPhT/Saclay Physics Seminar
  • Syracuse University Physics Colloquium
  • Syracuse High Energy/Relativity/Cosmology Seminar
  • MIT Physics Colloquium
  • Joint CfA/Tufts/MIT Cosmology Seminar (MIT)
  • Rutgers University Physics Colloquium
  • University of Washington Physics Colloquium
  • University of Washington Theory Seminar
  • Invited Talk, Geometry and the Universe Symposium, Stony Brook
  • UC Berkeley Theory Seminar
  • Caltech Physics Colloquium
  • Harvard University Theory Seminar
  • University of Illinois-Chicago Physics Colloquium
  • Invited Talk, SNAP collaboration meeting, Fermilab
  • Invited Talk, New Views of the Universe conference, Chicago
• 2006
  • University of Pennsylvania Theoretical Physics Seminar
  • University of British Columbia Theory Seminar
  • UC Riverside Physics Seminar
  • UCLA Physics Colloquium
  • University of Toronto Physics Colloquium
  • CITA Theory Seminar
  • University of New Mexico Physics and Astronomy Colloquium
  • Two Invited Talks, APS April Meeting, Dallas
  • Johns Hopkins Theory Seminar
  • Invited Talk, NASA Meeting on Fundamental Physics in Space, Washington DC
  • Invited Talk, Cosmology Workshop, Perimeter Institute
  • Invited Talk, NASA Institute for Advanced Concepts Meeting
  • NYU Physics Colloquium
  • UC Santa Barbara High-Energy Theory Seminar
  • Lensing Program Colloquium, KITP
  • Washington University Physics Colloquium
  • Villanova University Astronomy and Astrophysics Colloquium
  • SLAC Colloquium
  • Arizona State University Physics Colloquium
  • University of Nottingham Physics Colloquium
  • Invited Talk, UK Annual Particle Theory Meeting, Durham
• 2007
  • Duke University Physics Colloquium
  • University of Colorado Theory Seminar
  • University of Colorado Physics Colloquium
  • National Science Foundation Mathematics and Physical Sciences Distinguished Lecture
  • Invited Talk, Rethinking Gravity conference, University of Arizona
  • Caltech Theoretical Astrophysics and Relativity Seminar
  • Carnegie Observatories Colloquium
  • Purdue University Physics Colloquium
  • Perimeter Institute Colloquium
  • York University Physics Colloquium
  • University of Oregon Physics Colloquium
  • University of California, Irvine, Physics Colloquium
  • Georgia Tech Physics Colloquium
  • UC Santa Cruz Physics Colloquium
  • University of Cincinnati Physics Colloquium
  • Caltech Cosmology Seminar
  • Harvey Mudd College Physics Colloquium
  • Invited Talk, National Academy of Sciences Kavli Frontiers of Science Meeting
  • University of Maryland High Energy/Gravitation Seminar
  • University of Maryland Physics Colloquium
  • Invited Talk, Northeast String Cosmology Meeting
• 2008
  • UCLA Theory Seminar
  • University of Washington Physics Colloquium
  • Caltech Observational Cosmology Group Meeting
  • Invited Talk, National Academy of Sciences Annual Meeting Symposium
  • Caltech Theoretical Cosmology Group Meeting
  • UC Santa Barbara/KITP Theory Seminar
  • Invited Talk, Workshop on Cosmological Frontiers, Paris
  • Plenary Talk, American Astronomical Society meeting, St. Louis
  • Plenary Talk, Cosmo-08, Madison
  • Theoretical Cosmology Seminar, Imperial College, London
  • Caltech Astronomy Colloquium
  • Plenary Talk, Texas Symposium on Relativistic Astrophysics, Vancouver
• 2009
  • Fermilab Colloquium
  • Annual Lecture Series, Center for the Philosophy of Science, University of Pittsburgh
  • Caltech Particle Theory Group Meeting

• 1995
  • Volunteer Lecturer, Boston Public Schools
• 1996
  • Docent/Lecturer, UC Santa Barbara University Art Museum (1996-1998)
• 1999
  • Theoretical Advanced Study Institute Lectures: Cosmology for String Theorists
  • Guest Class, Adler Planetarium
• 2000
  • Lecturer/Discussion Leader, Midwest Faculty Seminar ``New Cosmologies''
  • Advanced Study Institute on Techniques and Concepts of High Energy Physics Lectures: Cosmology for Particle Physicists
  • Lecturer/Discussion Leader, Workshop on Teaching at Chicago
  • Odyssey with Gretchen Helfrich, WBEZ Radio (Chicago)
  • Model Class, Parents Weekend, University of Chicago
• 2001
  • Panel Discussion, Basic Teaching Skills Workshop, University of Chicago
  • Sigma Xi Dinner Talk, Swarthmore College
  • Extension 720 with Milt Rosenberg, WGN Radio (Chicago)
  • Odyssey with Gretchen Helfrich, WBEZ Radio (Chicago)
  • University of Chicago Graham School Lecture: 21st Century Science -- Cosmology
  • Public Lecture, Science Weekend, Snowmass 2001 Workshop on the Future of Particle Physics
  • Talk to Chicago Astronomical Society, Adler Planetarium
  • Lecturer/Discussion Leader, Workshop on Teaching at Chicago
  • Invited Talk, Packard Fellows Meeting
  • Model Class, Parents Weekend, University of Chicago
  • Tevatron University Lecture, Fermilab
  • Chautauqua Lecture, ``The New Cosmology'', University of Chicago
  • JASON Project Fall Meeting Lecture
• 2002
  • Cosmology Review Lectures, MIT Theory Retreat
  • Public Lecture, American Physical Society Meeting, Albuquerque, NM
  • Theoretical Advanced Study Institute Lectures: Cosmology for Particle Physicists
  • Public Lecture, New York State Section APS Meeting, Syracuse, NY
  • Public Lecture/Colloquium, Jefferson Labs, Virginia
  • Model Class, Parents Weekend, University of Chicago
• 2003
  • Adler Planetarium "Far Out Friday" Lecture
  • University of Chicago Alumni Weekend Lecture
  • Invited Talk, Russian-Anglo-American Conference on Cosmology and Theology, Notre Dame
  • Lunch Talk, Franke Institute for the Humanities, University of Chicago
  • Tevatron University Lecture, Fermilab
  • Malmstrom Lecture, Hamline University
  • Odyssey with Gretchen Helfrich, WBEZ Radio (Chicago)
  • Dinosaur Expedition Presentation for Project Exploration
  • Resnick Lecture, Rensselaer Polytechnic Institute
  • Council for the Advancement of Science Writing Meeting, Knoxville
  • Einstein in Chicago Panel Discussion, Illinois Institute of Technology
• 2004
  • Einstein Exhibit Lecture, Field Associates, Field Museum of Natural History, Chicago
  • Current Affairs Seminar, DePauw University
  • Public Lecture, DePauw University
  • Science Friday with Ira Flatow, NPR
  • University of Chicago Alumni Lecture
  • Quadrangle Club Fireside Chat (University of Chicago)
  • Odyssey with Gretchen Helfrich, WBEZ Radio (Chicago)
  • Dinosaur Expedition Presentation for Project Exploration
  • European Forum Alpbach, Cosmology Seminar (with Robert Wald)
  • Model Class, Parents Weekend, University of Chicago
  • Society of Physics Students Lunch Talk, University of Chicago
• 2005
  • Science Day Talk, Willows Academy
  • National Conference of Black Physics Students Lecture, Chicago
  • Public Lecture, Aspen Center for Physics
  • Panel Discussion, Theoretical Physics in Drama and Narrative, KITP, Santa Barbara
  • Keynote address, Society of Physics Students regional meeting, University of Michigan
  • Literary Lecture, Remy Bumppo Theatre Company, Chicago
  • Invited Talk, Cosmology at the Interface Between Physics and Philosophy, Notre Dame
  • Academic Lectures, CERN
  • Guest Lecture, Creation and Creativity, Franke Institute for the Humanities, University of Chicago
  • Literary Lecture, Victory Gardens Theater, Chicago
  • SLAC Summer Institute Lectures: Introduction to General Relativity
  • Invited Talk, Packard Fellows Meeting
  • Short Course for Planetarians Lecture, Kavli Institute for Cosmological Physics, University of Chicago
  • Invited Talk, World Year of Physics Symposium, Fermilab
  • Invited Talk, Einstein Symposium, Parker School, Chicago
  • Extension 720 with Milt Rosenberg, WGN Radio (Chicago)
• 2006
  • Draft Innovation Workshop, Chicago
  • Blackstone House Fireside Chat, University of Chicago
  • Cafe Scientifique, Chicago
  • Midwest Faculty Seminar, University of Chicago
  • Science and Religion Discussion Group, Augustana Lutheran Church, Chicago
  • Rennaisance Weekend, Quebec City
  • Lectures on Introductory Cosmology, ICTP Summer School, Trieste
  • Science Friday with Ira Flatow, NPR
  • Keynote Address, Midwestern Regional American Association of Physics Teachers
  • Villanova University Center for Liberal Education Lecture
  • Coast to Coast AM with Art Bell radio show
• 2007
  • Communicating Science to the Public Conference, University of Nebraska
  • Coast to Coast AM with Art Bell radio show
  • Invited Talk, Conference on Communicating Science, Math, and Engineering to Broader Audiences, University of Nebraska
  • Lectures on Dark Energy, SIGRAV Summer School on Gravitation, Como, Italy
  • BBC Radio Interview, This Material World
  • Dinosaur Expedition Presentation for Project Exploration
  • Invited Talk, Science Panel, YearlyKos 2007.
  • Invited Talk, International Congress on Logic, Methodology, and Philosophy of Science, Beijing
  • Categorically Not, Santa Monica
  • Invited Talk, Plato's Timaeus Today Conference, University of Illinois
  • Invited Talk, Beyond Belief II, Salk Institute
  • Canandian Broadcast Corporation Quirks and Quarks radio show
  • National Academy of Sciences Colloquium on 50 Years of Space
  • Modern Physics and the Mystery of Reality, Shaw Center for the Arts, Baton Rouge
• 2008
  • The Universe: Dark Matter, The History Channel
  • Invited Talk, National Academy of Sciences Symposium, Washington DC
  • The Universe: End of the Universe, The History Channel
  • Invited Lecture, Pulmonary Research Conference, Palm Springs, California
  • This Week in Science radio show/podcast
  • Public Lecture, Center for Inquiry, Los Angeles
  • Invited Talk, Origins Conference, Skeptic Society, Pasadena
  • The God Debate, Literary and Historical Society, University College Dublin
  • Public Lecture in Second Life, Meta Institute for Computational Astrophysics
  • Authors @ Google Talk, Santa Monica
  • Panel Discussion, The Day the Earth Stood Still, Caltech
  • Patt Morrison Show, KPCC, Pasadena
• 2009
  • Known Universe: The Fastest, National Geographic Channel
  • Public Lecture, Claremont Senior Center
  • Caltech Undergraduate Seminar
  • WSF Spotlight Event, World Science Festival, New York
  • Time Since Einstein Panel, World Science Festival, New York