Probing thermality beyond the diagonal

Brehm, Enrico; Das, Diptarka; Datta, Shouvik

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Probing thermality beyond the diagonal

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

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

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1804.07924.pdf
(プレプリント), 702KB

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引用

Brehm, E., Das, D., & Datta, S. (in preparation). Probing thermality beyond the diagonal.

引用: https://hdl.handle.net/21.11116/0000-0001-54BC-D

要旨

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.