{"id":156543,"date":"2023-01-28T21:31:56","date_gmt":"2023-01-29T03:31:56","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2023\/01\/on-the-existence-of-a-holographic-description-of-the-lhc-quark-gluon-plasmas"},"modified":"2023-01-28T21:31:56","modified_gmt":"2023-01-29T03:31:56","slug":"on-the-existence-of-a-holographic-description-of-the-lhc-quark-gluon-plasmas","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2023\/01\/on-the-existence-of-a-holographic-description-of-the-lhc-quark-gluon-plasmas","title":{"rendered":"On the existence of a holographic description of the LHC quark\u2013gluon plasmas"},"content":{"rendered":"<p><a class=\"aligncenter blog-photo\" href=\"https:\/\/lifeboat.com\/blog.images\/on-the-existence-of-a-holographic-description-of-the-lhc-quark-gluon-plasmas2.jpg\"><\/a><\/p>\n<p>Year 2017 <span class=\"wp-smiley emoji emoji-face_with_colon_three\" title=\":3\">face_with_colon_three<\/span> <\/p>\n<hr>\n<p>A basic question [1] in the study of the gauge-gravity duality is this: which field theories have a gravity dual? In the case of applications to actual strongly coupled systems such as the Quark\u2013Gluon Plasma [2], [3], [4], [5], [6], this question becomes: does every <em>realistic<\/em> strongly coupled system have such a dual? To settle this, one needs to examine the most extreme cases. The most extreme strongly-coupled systems currently accessible to experiment are probably (see below) the plasmas produced by collisions of <a href=\"https:\/\/www.sciencedirect.com\/topics\/physics-and-astronomy\/heavy-ion\" title=\"Learn more about heavy ions from ScienceDirect's AI-generated Topic Pages\" class=\"\">heavy ions<\/a> at the LHC [7], [8] ; so one needs to consider whether <a href=\"https:\/\/www.sciencedirect.com\/topics\/physics-and-astronomy\/holography\" title=\"Learn more about holography from ScienceDirect's AI-generated Topic Pages\" class=\"\">holography<\/a> works in this case.<\/p>\n<p>In [9] we adduced evidence <em>suggesting that it does not<\/em>. The problem is a very fundamental one: it appears that the purported gravity dual in some cases does not exist when one attempts to interpret it (as one ultimately must [10]) as a string-theoretic system.<\/p>\n<p>The situation may be briefly explained as follows. Ferrari and co-workers have shown [11], [12], [13], [14] that, simply for reasons of internal mathematical consistency, a string-theoretic bulk spacetime with a holographic dual must satisfy certain fundamental relations between the Euclidean spacetime action and the action of probes (such as branes). This has been explicitly confirmed in a large number of concrete cases [14].<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Year 2017 face_with_colon_three A basic question [1] in the study of the gauge-gravity duality is this: which field theories have a gravity dual? In the case of applications to actual strongly coupled systems such as the Quark\u2013Gluon Plasma [2], [3], [4], [5], [6], this question becomes: does every realistic strongly coupled system have such a [\u2026]<\/p>\n","protected":false},"author":513,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2229,48],"tags":[],"class_list":["post-156543","post","type-post","status-publish","format-standard","hentry","category-mathematics","category-particle-physics"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/156543","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\/513"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=156543"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/156543\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=156543"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=156543"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=156543"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}