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Journal Article

Probing thermality beyond the diagonal

MPS-Authors
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Brehm,  Enrico
Gravity, Quantum Fields and Information, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

/persons/resource/persons218062

Das,  Diptarka
Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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1804.07924.pdf
(Preprint), 702KB

PRD.98.126015.pdf
(Publisher version), 370KB

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Citation

Brehm, E., Das, D., & Datta, S. (2018). Probing thermality beyond the diagonal. Physical Review D, 98: 126015. doi:10.1103/PhysRevD.98.126015.


Cite as: https://hdl.handle.net/21.11116/0000-0001-54BC-D
Abstract
We investigate the off-diagonal sector of eigenstate thermalization using
both local and non-local probes in 2-dimensional conformal field theories. A
novel analysis of the asymptotics of OPE coefficients via the modular bootstrap
is performed to extract the behaviour of the off-diagonal matrix elements. We
also probe this sector using semi-classical heavy-light Virasoro blocks. The
results demonstrate signatures of thermality and confirms the entropic
suppression of the off-diagonal elements as necessitated by the eigenstate
thermalization hypothesis.