Skip to main content

Research Repository

See what's under the surface

Advanced Search

Eigenstate thermalization hypothesis in quantum dimer models

Lan, Zhihao; Powell, Stephen

Authors

Zhihao Lan Zhihao.Lan@nottingham.ac.uk

Stephen Powell



Abstract

We use exact diagonalization to study the eigenstate thermalization hypothesis (ETH) in the quantum dimer model on the square and triangular lattices. Due to the nonergodicity of the local plaquette-ip dynamics, the Hilbert space, which consists of highly constrained close-packed dimer configurations, splits into sectors characterized by topological invariants. We show that this has important consequences for ETH: We find that ETH is clearly satisfied only when each topological sector is treated separately, and only for moderate ratios of the potential and kinetic terms in the Hamiltonian. By contrast, when the spectrum is treated as a whole, ETH breaks down on the square lattice, and apparently also on the triangular lattice. These results demonstrate that quantum dimer models have interesting thermalization dynamics that has not previously been studied.

Journal Article Type Article
Journal Physical Review B
Print ISSN 2469-9950
Electronic ISSN 2469-9969
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 96
Issue 11
APA6 Citation Lan, Z., & Powell, S. (in press). Eigenstate thermalization hypothesis in quantum dimer models. Physical Review B, 96(11), doi:10.1103/PhysRevB.96.115140
DOI https://doi.org/10.1103/PhysRevB.96.115140
Publisher URL https://journals.aps.org/prb/abstract/10.1103/PhysRevB.96.115140
Related Public URLs https://rdmc.nottingham.ac.uk/handle/internal/331
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf
Additional Information © American Physical Society

Files

BF13663.pdf (5.3 Mb)
PDF

Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf


PhysRevB.96.pdf (2.5 Mb)
PDF

Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





You might also like



Downloadable Citations

;