{"id":13431,"date":"2020-05-19T07:52:45","date_gmt":"2020-05-19T14:52:45","guid":{"rendered":"http:\/\/www.preposterousuniverse.com\/blog\/?p=13431"},"modified":"2020-05-26T07:27:56","modified_gmt":"2020-05-26T14:27:56","slug":"the-biggest-ideas-in-the-universe-9-fields","status":"publish","type":"post","link":"https:\/\/preposterousuniverse.com\/blog\/2020\/05\/19\/the-biggest-ideas-in-the-universe-9-fields\/","title":{"rendered":"The Biggest Ideas in the Universe | 9. Fields"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">We&#8217;ve talked about the quantum mechanics of particles, now it&#8217;s time to apply those ideas to fields. It requires a bit of effort to understand how a quantum field &#8212; which is really a wave on top of a wave, when you think about it &#8212; ends up looking like particles in the right circumstances. But it&#8217;s worth it.<\/p>\n\n\n<figure class=\"wp-block-embed-youtube wp-block-embed is-type-video is-provider-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"lyte-wrapper\" title=\"The Biggest Ideas in the Universe | 9. Fields\" style=\"width:640px;max-width:100%;margin:5px;\"><div class=\"lyMe\" id=\"WYL_Dy1LNk_B6IE\" itemprop=\"video\" itemscope itemtype=\"https:\/\/schema.org\/VideoObject\"><div><meta itemprop=\"thumbnailUrl\" content=\"https:\/\/i.ytimg.com\/vi\/Dy1LNk_B6IE\/hqdefault.jpg\" \/><meta itemprop=\"embedURL\" content=\"https:\/\/www.youtube.com\/embed\/Dy1LNk_B6IE\" \/><meta itemprop=\"duration\" content=\"PT1H16M30S\" \/><meta itemprop=\"uploadDate\" content=\"2020-05-19T14:44:52Z\" \/><\/div><div id=\"lyte_Dy1LNk_B6IE\" data-src=\"https:\/\/i.ytimg.com\/vi\/Dy1LNk_B6IE\/hqdefault.jpg\" class=\"pL\"><div class=\"tC\"><div class=\"tT\" itemprop=\"name\">The Biggest Ideas in the Universe | 9. Fields<\/div><\/div><div class=\"play\"><\/div><div class=\"ctrl\"><div class=\"Lctrl\"><\/div><div class=\"Rctrl\"><\/div><\/div><\/div><noscript><a href=\"https:\/\/youtu.be\/Dy1LNk_B6IE\" rel=\"nofollow\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i.ytimg.com\/vi\/Dy1LNk_B6IE\/0.jpg\" alt=\"The Biggest Ideas in the Universe | 9. Fields\" width=\"640\" height=\"340\" \/><br \/>Watch this video on YouTube<\/a><\/noscript><meta itemprop=\"description\" content=\"The Biggest Ideas in the Universe is a series of videos where I talk informally about some of the fundamental concepts that help us understand our natural world. Exceedingly casual, not overly polished, and meant for absolutely everybody. This is Idea #9, &quot;Fields.&quot; A little bit about classical fields, but mostly concentrating on quantum field theory, and in particular on why a quantized field ends up looking like particles. This one is a bit challenging! My web page: http:\/\/www.preposterousuniverse.com\/ My YouTube channel: https:\/\/www.youtube.com\/c\/seancarroll Mindscape podcast: http:\/\/www.preposterousuniverse.com\/podcast The Biggest Ideas playlist: https:\/\/www.youtube.com\/playlist?list=PLrxfgDEc2NxZJcWcrxH3jyjUUrJlnoyzX Blog posts for the series: http:\/\/www.preposterousuniverse.com\/blog\/category\/biggest-ideas-in-the-universe\/ #science #physics #ideas #universe #learning #cosmology #philosophy #quantum #fields\"><\/div><\/div><div class=\"lL\" style=\"max-width:100%;width:640px;margin:5px;\"><\/div><figcaption><\/figcaption><\/figure>\n\n\n<p class=\"wp-block-paragraph\">And here is the Q&amp;A video. I talk a bit about different kinds of fields, and why the Dirac or Klein-Gordon equations are not relativistic versions of the Schr\u00f6dinger equation.<\/p>\n\n\n<figure class=\"wp-block-embed-youtube wp-block-embed is-type-video is-provider-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"lyte-wrapper\" title=\"The Biggest Ideas in the Universe | Q&amp;amp;A 9 - Fields\" style=\"width:640px;max-width:100%;margin:5px;\"><div class=\"lyMe\" id=\"WYL_hxR9RBujJUY\" itemprop=\"video\" itemscope itemtype=\"https:\/\/schema.org\/VideoObject\"><div><meta itemprop=\"thumbnailUrl\" content=\"https:\/\/i.ytimg.com\/vi\/hxR9RBujJUY\/hqdefault.jpg\" \/><meta itemprop=\"embedURL\" content=\"https:\/\/www.youtube.com\/embed\/hxR9RBujJUY\" \/><meta itemprop=\"duration\" content=\"PT1H5M30S\" \/><meta itemprop=\"uploadDate\" content=\"2020-05-24T22:44:48Z\" \/><\/div><div id=\"lyte_hxR9RBujJUY\" data-src=\"https:\/\/i.ytimg.com\/vi\/hxR9RBujJUY\/hqdefault.jpg\" class=\"pL\"><div class=\"tC\"><div class=\"tT\" itemprop=\"name\">The Biggest Ideas in the Universe | Q&amp;A 9 - Fields<\/div><\/div><div class=\"play\"><\/div><div class=\"ctrl\"><div class=\"Lctrl\"><\/div><div class=\"Rctrl\"><\/div><\/div><\/div><noscript><a href=\"https:\/\/youtu.be\/hxR9RBujJUY\" rel=\"nofollow\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i.ytimg.com\/vi\/hxR9RBujJUY\/0.jpg\" alt=\"The Biggest Ideas in the Universe | Q&amp;amp;A 9 - Fields\" width=\"640\" height=\"340\" \/><br \/>Watch this video on YouTube<\/a><\/noscript><meta itemprop=\"description\" content=\"The Biggest Ideas in the Universe is a series of videos where I talk informally about some of the fundamental concepts that help us understand our natural world. Exceedingly casual, not overly polished, and meant for absolutely everybody. This is the Q&amp;A video associated with Idea #9, &quot;Fields.&quot; I go once more through why the simple harmonic oscillator has quantized energy levels, explain how the Dirac equation and Klein-Gordon equations are *not* relativistic versions of the Schr\u00f6dinger equation, and mention entanglement and the Reeh-Schlieder Theorem. My web page: http:\/\/www.preposterousuniverse.com\/ My YouTube channel: https:\/\/www.youtube.com\/c\/seancarroll Mindscape podcast: http:\/\/www.preposterousuniverse.com\/podcast The Biggest Ideas playlist: https:\/\/www.youtube.com\/playlist?list=PLrxfgDEc2NxZJcWcrxH3jyjUUrJlnoyzX Blog posts for the series: http:\/\/www.preposterousuniverse.com\/blog\/category\/biggest-ideas-in-the-universe\/ #science #physics #ideas #universe #learning #cosmology #philosophy #quantum #fields\"><\/div><\/div><div class=\"lL\" style=\"max-width:100%;width:640px;margin:5px;\"><\/div><figcaption><\/figcaption><\/figure>","protected":false},"excerpt":{"rendered":"<p>We&#8217;ve talked about the quantum mechanics of particles, now it&#8217;s time to apply those ideas to fields. It requires a bit of effort to understand how a quantum field &#8212; which is really a wave on top of a wave, when you think about it &#8212; ends up looking like particles in the right circumstances. [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[137,28],"tags":[],"class_list":["post-13431","post","type-post","status-publish","format-standard","hentry","category-biggest-ideas-in-the-universe","category-science"],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/preposterousuniverse.com\/blog\/wp-json\/wp\/v2\/posts\/13431","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/preposterousuniverse.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/preposterousuniverse.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/preposterousuniverse.com\/blog\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/preposterousuniverse.com\/blog\/wp-json\/wp\/v2\/comments?post=13431"}],"version-history":[{"count":2,"href":"https:\/\/preposterousuniverse.com\/blog\/wp-json\/wp\/v2\/posts\/13431\/revisions"}],"predecessor-version":[{"id":13435,"href":"https:\/\/preposterousuniverse.com\/blog\/wp-json\/wp\/v2\/posts\/13431\/revisions\/13435"}],"wp:attachment":[{"href":"https:\/\/preposterousuniverse.com\/blog\/wp-json\/wp\/v2\/media?parent=13431"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/preposterousuniverse.com\/blog\/wp-json\/wp\/v2\/categories?post=13431"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/preposterousuniverse.com\/blog\/wp-json\/wp\/v2\/tags?post=13431"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}