Anti-de Sitter/conformal field theory correspondence | Wikipedia audio article
Channel: Subhajit Sahu
Date: 2018-12-30

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/AdS/CFT_correspondence


00:02:27 1 Background
00:02:37 1.1 Quantum gravity and strings
00:05:38 1.2 Quantum field theory
00:07:02 2 Overview of the correspondence
00:07:13 2.1 The geometry of anti-de Sitter space
00:09:39 2.2 The idea of AdS/CFT
00:12:38 2.3 Examples of the correspondence
00:17:23 3 Applications to quantum gravity
00:17:35 3.1 A non-perturbative formulation of string theory
00:20:20 3.2 Black hole information paradox
00:22:30 4 Applications to quantum field theory
00:22:42 4.1 Nuclear physics
00:27:01 4.2 Condensed matter physics
00:29:11 4.3 Criticism
00:32:21 5 History and development
00:32:31 5.1 String theory and nuclear physics
00:35:21 5.2 Black holes and holography
00:37:27 5.3 Maldacena's paper
00:39:29 5.4 AdS/CFT finds applications
00:41:48 6 Generalizations
00:41:58 6.1 Three-dimensional gravity
00:43:44 6.2 dS/CFT correspondence
00:45:18 6.3 Kerr/CFT correspondence
00:46:42 6.4 Higher spin gauge theories
00:47:58 7 See also



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SUMMARY
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In theoretical physics, the anti-de Sitter/conformal field theory correspondence, sometimes called Maldacena duality or gauge/gravity duality, is a conjectured relationship between two kinds of physical theories. On one side are anti-de Sitter spaces (AdS) which are used in theories of quantum gravity, formulated in terms of string theory or M-theory. On the other side of the correspondence are conformal field theories (CFT) which are quantum field theories, including theories similar to the Yang–Mills theories that describe elementary particles.
The duality represents a major advance in our understanding of string theory and quantum gravity. This is because it provides a non-perturbative formulation of string theory with certain boundary conditions and because it is the most successful realization of the holographic principle, an idea in quantum gravity originally proposed by Gerard 't Hooft and promoted by Leonard Susskind.
It also provides a powerful toolkit for studying strongly coupled quantum field theories. Much of the usefulness of the duality results from the fact that it is a strong-weak duality: when the fields of the quantum field theory are strongly interacting, the ones in the gravitational theory are weakly interacting and thus more mathematically tractable. This fact has been used to study many aspects of nuclear and condensed matter physics by translating problems in those subjects into more mathematically tractable problems in string theory.
The AdS/CFT correspondence was first proposed by Juan Maldacena in late 1997. Important aspects of the correspondence were elaborated in articles by Steven Gubser, Igor Klebanov, and Alexander Polyakov, and by Edward Witten. By 2015, Maldacena's article had over 10,000 citations, becoming the most highly cited article in the field of high energy physics.