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Eigenstate correlations, thermalization and the Butterfly Effect

Abstract:
We discuss eigenstate correlations for ergodic, spatially extended many-body quantum systems, in terms of the statistical properties of matrix elements of local observables. While the eigenstate thermalization hypothesis (ETH) is known to give an excellent description of these quantities, the butterfly effect implies structure beyond ETH. We determine the universal form of this structure at long distances and small eigenvalue separations for Floquet systems. We use numerical studies of a Floquet quantum circuit to illustrate both the accuracy of ETH and the existence of our predicted additional correlations.
Publication status:
Not published
Peer review status:
Reviewed (other)

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Institution:
University of Oxford
Division:
MPLS Division
Department:
Physics: Theoretical Physics
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Theoretical Physics
Oxford college:
St Hugh's College
Role:
Author
ORCID:
0000-0003-4369-6071


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Funding agency for:
Chalker, J
Grant:
EP/N01930X/1
More from this funder
Funding agency for:
De Luca, A
Grant:
Marie Sklodowska-Curie Grant: 794750


Host title:
ArXiv
Series:
ArXiv
Publication date:
2018-10-25


Pubs id:
pubs:936836
UUID:
uuid:46e8509e-49fd-4efb-b6fe-62c610d0408a
Local pid:
pubs:936836
Source identifiers:
936836
Deposit date:
2018-11-21

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