Thermal stress tensor correlators near lightcone and holography
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Publication:6142680
DOI10.1007/JHEP11(2023)107arXiv2306.00787OpenAlexW4388814083MaRDI QIDQ6142680
Author name not available (Why is that?)
Publication date: 26 January 2024
Published in: (Search for Journal in Brave)
Abstract: We consider thermal stress-tensor two-point functions in holographic theories in the near-lightcone regime and analyse them using the operator product expansion (OPE). In the limit we consider only the leading-twist multi-stress tensors contribute and the correlators depend on a particular combination of lightcone momenta. We argue that such correlators are described by three universal functions, which can be holographically computed in Einstein gravity; higher-derivative terms in the gravitational Lagrangian enter the arguments of these functions via the cubic stress-tensor couplings and the thermal stress-tensor expectation value in the dual CFT. We compute the retarded correlators and observe that in addition to the perturbative OPE, which contributes to the real part, there is a non-perturbative contribution to the imaginary part.
Full work available at URL: https://arxiv.org/abs/2306.00787
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