Eigenstate thermalization hypothesis in quantum dimer models
Publication Date
September 21, 2017
Creators
Description
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-flip 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. The deposited data are exact diagonalization results for the expectation values of several local observables in the energy eigenstates.
Collection dates:
05.2016-04.2017
Associate publ. DOI
Subjects (LCSH)
Subjects
Subjects (JACS)
Subjects (LC)
Divisions
University of Nottingham, UK Campus::Faculty of Science::School of Physics and Astronomy
Data type
Results of exactly diagonalizing quantum dimer models on square and triangular lattices
Grant Number
EP/M019691/1
Data collection method
numerical exact diagonalization
Resource languages
English
Publisher
University of Nottingham
Date Issued
September 21, 2017
File(s)![Thumbnail Image]()
Name
Data_DimerETH.zip
Size
871.58 MB
Format
Unknown
Checksum (MD5)
04196273d1da7b496b1f2e933ad8c2dd