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arXiv · 1804.07924

Probing thermality beyond the diagonal

Enrico M. Brehm·Diptarka Das·Shouvik Datta
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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.

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Enrico M. Brehm, Diptarka Das, Shouvik Datta. 2018-04-21. Probing thermality beyond the diagonal. https://doi.org/10.1103/physrevd.98.126015

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