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<math><mi>d</mi><mo>></mo><mn>2</mn></math> stress-tensor operator product expansion near a line

Authors :
Kuo-Wei Huang
Source :
Physical Review
Publication Year :
2021
Publisher :
APS, 2021.

Abstract

We study the operator product expansion of stress tensors (TT OPE) in d&gt;2 conformal field theories whose bulk dual is Einstein gravity. Directly from the TT OPE, we obtain, in a certain null-like limit, an algebraic structure consistent with the Jacobi identity: [Lm,Ln]=(m−n)Lm+n+Cm(m2−1)δm+n,0. The dimensionless constant C is proportional to the central charge CT. Transverse integrals in the definition of Lm play a crucial role. We comment on the corresponding limiting procedure and point out a curiosity related to the central term. A connection between the d&gt;2 near-lightcone stress-tensor conformal block and the d=2 W algebra is observed. This note is motivated by the search for a field-theoretic derivation of d&gt;2 correlators in strong coupling critical phenomena.

Details

Language :
English
Database :
OpenAIRE
Journal :
Physical Review
Accession number :
edsair.doi.dedup.....dd0910a471f7b4f1010bff1f22869c55