{"id":202838,"date":"2024-12-31T01:27:39","date_gmt":"2024-12-31T07:27:39","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2024\/12\/space-time-the-biggest-problem-in-physics"},"modified":"2024-12-31T01:27:39","modified_gmt":"2024-12-31T07:27:39","slug":"space-time-the-biggest-problem-in-physics","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2024\/12\/space-time-the-biggest-problem-in-physics","title":{"rendered":"Space-Time: The Biggest Problem in Physics"},"content":{"rendered":"<p><\/p>\n<p><iframe style=\"display: block; margin: 0 auto; width: 100%; aspect-ratio: 4\/3; object-fit: contain;\" src=\"https:\/\/www.youtube.com\/embed\/RIqVnFtOSr4?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope;\n   picture-in-picture\" allowfullscreen><\/iframe><\/p>\n<p>What is the deepest level of reality? In this Quanta explainer, Vijay Balasubramanian, a physicist at the University of Pennsylvania, takes us on a journey through space-time to investigate what it\u2019s made of, why it\u2019s failing us, and where physics can go next.<\/p>\n<p>Explore black holes, holograms, \u201calien algebra,\u201d and more space-time geometry: <a href=\"https:\/\/www.quantamagazine.org\/the-un\">https:\/\/www.quantamagazine.org\/the-un<\/a>\u2026<\/p>\n<p>00:00 \u2014 The Planck length, an intro to space-time.<br \/> 1:23 \u2014 Descartes and Newton investigate space and time.<br \/> 2:04 \u2014 Einstein\u2019s special relativity.<br \/> 2:32 \u2014 The geometry of space-time and the manifold.<br \/> 3:16 \u2014 Einstein\u2019s general relativity: space-time in four dimensions.<br \/> 3:35 \u2014 The mathematical curvature of space-time.<br \/> 4:57 \u2014 Einstein\u2019s field equation.<br \/> 6:04 \u2014 Singularities: where general relativity fails.<br \/> 6:50 \u2014 Quantum mechanics (amplitudes, entanglement, Schr\u00f6dinger equation)<br \/> 8:32 \u2014 The problem of quantum gravity.<br \/> 9:38 \u2014 Applying quantum mechanics to our manifold.<br \/> 10:36 \u2014 Why particle accelerators can\u2019t test quantum gravity.<br \/> 11:28 \u2014 Is there something deeper than space-time?<br \/> 11:45 \u2014 Hawking and Bekenstein discover black holes have entropy.<br \/> 13:54 \u2014 The holographic principle.<br \/> 14:49 \u2014 AdS\/CFT duality.<br \/> 16:06 \u2014 Space-time may emerge from entanglement.<br \/> 17:44 \u2014 The path to quantum gravity.<\/p>\n<p>\u2014\u2014-<br \/> VISIT our website: <a href=\"https:\/\/www.quantamagazine.org\">https:\/\/www.quantamagazine.org<\/a>.<br \/> LIKE us on Facebook: \/ quantanews.<br \/> FOLLOW us Twitter: \/ quantamagazine.<\/p>\n<p>Quanta Magazine is an editorially independent publication supported by the Simons Foundation: <a href=\"https:\/\/www.simonsfoundation.org\">https:\/\/www.simonsfoundation.org<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>What is the deepest level of reality? In this Quanta explainer, Vijay Balasubramanian, a physicist at the University of Pennsylvania, takes us on a journey through space-time to investigate what it\u2019s made of, why it\u2019s failing us, and where physics can go next. Explore black holes, holograms, \u201calien algebra,\u201d and more space-time geometry: https:\/\/www.quantamagazine.org\/the-un\u2026 00:00 [\u2026]<\/p>\n","protected":false},"author":662,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[33,1923,41,2229,48,1617],"tags":[],"class_list":["post-202838","post","type-post","status-publish","format-standard","hentry","category-cosmology","category-holograms","category-information-science","category-mathematics","category-particle-physics","category-quantum-physics"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/202838","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/users\/662"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=202838"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/202838\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=202838"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=202838"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=202838"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}