{"id":929981,"date":"2023-02-06T16:04:09","date_gmt":"2023-02-06T16:04:09","guid":{"rendered":"https:\/\/projects.ift.uam-csic.es\/holotube\/?p=929981"},"modified":"2023-02-16T18:58:00","modified_gmt":"2023-02-16T18:58:00","slug":"february-7-quantum-field-theory-in-wonderland-by-paul-romatschke","status":"publish","type":"post","link":"https:\/\/projects.ift.uam-csic.es\/holotube\/2023\/02\/06\/february-7-quantum-field-theory-in-wonderland-by-paul-romatschke\/","title":{"rendered":"February 7: &#8220;Quantum Field Theory in Wonderland&#8221; by Paul Romatschke"},"content":{"rendered":"\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<p><strong>Date : February 7, 2023, 16:00 CET<\/strong> <\/p>\n\n\n\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<p><strong><strong>Paul Romatschke<\/strong><\/strong> (University of Colorado, Boulder)<\/p>\n<\/div><\/div>\n\n\n\n<p><strong>Link:<\/strong>&nbsp;<a href=\"https:\/\/zoom.us\/j\/98260147834?pwd=VW5BQStqUGUrUFFzWG1jL2tuWXJoZz09\">https:\/\/zoom.us\/j\/98260147834?pwd=VW5BQStqUGUrUFFzWG1jL2tuWXJoZz09<\/a><\/p>\n\n\n\n<p><strong>Quantum Field Theory in Wonderland<\/strong><\/p>\n\n\n\n<p>Abstract:  Wouldn&#8217;t it be nice to solve large N QCD analytically? While QCD is hard, it is fairly easy to solve scalar field theories with many components, such as the O(N) model in the large N limit. Traditional wisdom has it that such theories are ill defined because they have the wrong beta function, possess a Landau pole, and are quantum trivial for N=1. In this talk, I throw out conventional wisdom, and critically re-examine scalar field theories in 4d, borrowing heavily from PT-symmetric field theory results. It&#8217;s a solvable wonderland with asymptotic freedom, bound states in the infrared and a phase transition in between.<\/p>\n<\/div><\/div>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\"  style=\"display: block; margin: 0px auto;\"  id=\"_ytid_30068\"  width=\"1170\" height=\"658\"  data-origwidth=\"1170\" data-origheight=\"658\" src=\"https:\/\/www.youtube.com\/embed\/XMcnud5DTN0?enablejsapi=1&#038;autoplay=0&#038;cc_load_policy=0&#038;cc_lang_pref=&#038;iv_load_policy=1&#038;loop=0&#038;rel=1&#038;fs=1&#038;playsinline=0&#038;autohide=2&#038;theme=dark&#038;color=red&#038;controls=1&#038;\" class=\"__youtube_prefs__  epyt-is-override  no-lazyload\" title=\"YouTube player\"  allow=\"fullscreen; accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen data-no-lazy=\"1\" data-skipgform_ajax_framebjll=\"\"><\/iframe>\n<\/div><\/figure>\n\n\n\n<div data-wp-interactive=\"core\/file\" class=\"wp-block-file\"><object data-wp-bind--hidden=\"!state.hasPdfPreview\" hidden class=\"wp-block-file__embed\" data=\"https:\/\/projects.ift.uam-csic.es\/holotube\/wp-content\/uploads\/2023\/02\/HoloTubeFeb23.pdf\" type=\"application\/pdf\" style=\"width:100%;height:600px\" aria-label=\"Embed of Embed of Romatschke_HoloTube_Spring2023..\"><\/object><a id=\"wp-block-file--media-db0de80e-c81c-4f4a-85c9-6247b4ffddd0\" href=\"https:\/\/projects.ift.uam-csic.es\/holotube\/wp-content\/uploads\/2023\/02\/HoloTubeFeb23.pdf\">Romatschke_HoloTube_Spring2023<\/a><a href=\"https:\/\/projects.ift.uam-csic.es\/holotube\/wp-content\/uploads\/2023\/02\/HoloTubeFeb23.pdf\" class=\"wp-block-file__button\" download aria-describedby=\"wp-block-file--media-db0de80e-c81c-4f4a-85c9-6247b4ffddd0\">Download<\/a><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Date : February 7, 2023, 16:00 CET Paul Romatschke (University of Colorado, Boulder) Link:&nbsp;https:\/\/zoom.us\/j\/98260147834?pwd=VW5BQStqUGUrUFFzWG1jL2tuWXJoZz09 Quantum Field Theory in Wonderland Abstract: Wouldn&#8217;t it be nice to solve large N QCD analytically? While QCD is hard, it is fairly easy to solve scalar field theories with many components, such as the O(N) model in the large N [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-929981","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/projects.ift.uam-csic.es\/holotube\/wp-json\/wp\/v2\/posts\/929981","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/projects.ift.uam-csic.es\/holotube\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/projects.ift.uam-csic.es\/holotube\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/projects.ift.uam-csic.es\/holotube\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/projects.ift.uam-csic.es\/holotube\/wp-json\/wp\/v2\/comments?post=929981"}],"version-history":[{"count":3,"href":"https:\/\/projects.ift.uam-csic.es\/holotube\/wp-json\/wp\/v2\/posts\/929981\/revisions"}],"predecessor-version":[{"id":929998,"href":"https:\/\/projects.ift.uam-csic.es\/holotube\/wp-json\/wp\/v2\/posts\/929981\/revisions\/929998"}],"wp:attachment":[{"href":"https:\/\/projects.ift.uam-csic.es\/holotube\/wp-json\/wp\/v2\/media?parent=929981"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/projects.ift.uam-csic.es\/holotube\/wp-json\/wp\/v2\/categories?post=929981"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/projects.ift.uam-csic.es\/holotube\/wp-json\/wp\/v2\/tags?post=929981"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}