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arXiv · 2104.14940

Eigenstate Thermalisation on Average

Joe Dunlop·Oliver Cohen·Anthony J. Short
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Abstract

We consider conditions under which an isolated quantum system approaches a microcanonical equilibrium state. A key component is the eigenstate thermalisation hypothesis, which proposes that all energy eigenstates appear thermal. We introduce a weaker version of this requirement, applying only to the average distinguishability of eigenstates from the thermal state, and investigate its necessity and sufficiency for thermalisation.

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Joe Dunlop, Oliver Cohen, Anthony J. Short. 2021-04-30. Eigenstate Thermalisation on Average. https://doi.org/10.1103/physreve.104.024135

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