Higher-spin theory | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-02-18

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Higher-spin_theory


00:01:06 1 Free Higher Spin Fields
00:06:24 2 No-go Theorems
00:06:49 2.1 Flat Space
00:08:39 2.2 Anti-de Sitter Space
00:09:50 3 Various Approaches to Higher Spin Theories
00:10:17 3.1 Conformal Higher Spin Theories
00:13:59 3.2 Collective Dipole
00:16:24 3.3 Holographic RG Flow
00:16:59 3.4 Noether Procedure
00:21:17 3.5 Reconstruction
00:22:11 3.6 Three dimensions and Chern-Simons
00:27:34 3.7 Vasiliev Equations
00:28:45 4 Higher Spin AdS/CFT Correspondence
00:29:02 4.1 Klebanov-Polyakov Conjecture
00:34:55 4.2 Gaberdiel-Gopakumar Conjecture



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SUMMARY
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Higher Spin Theory or Higher Spin Gravity is a common name for field theories that contain massless fields of spin greater than two. Usually, the spectrum of such theories contains
the graviton as a massless spin-two field, which explains the second name. Massless fields are gauge fields and the theories should be (almost) completely fixed by these higher spin symmetries. Higher spin theories are supposed to be consistent quantum theories and, for this reason, to give examples of quantum gravity. Most of the interest in the topic is due to the  AdS/CFT correspondence where there is a number of conjectures relating higher spin theories to weakly coupled conformal field theories. It is important to note that only certain parts of these theories are known at present (in particular, standard action principles are not 
known) and not many examples have been worked out in detail except some 
specific toy models (such as the higher spin extension of pure 
Chern-Simons, Jackiw-Teitelboim, selfdual (chiral) and Weyl gravity theories).