Bulletin of the American Physical Society
APS March Meeting 2022
Volume 67, Number 3
Monday–Friday, March 14–18, 2022; Chicago
Session Z50: Quantum Many-Body Scars
11:30 AM–1:42 PM,
Friday, March 18, 2022
Room: McCormick Place W-474A
Sponsoring
Unit:
DCMP
Chair: Sanjay Moudgalya, Caltech
Abstract: Z50.00011 : Construction of quantum many-body scars in higher-dimensional spinless fermion systems*
1:30 PM–1:42 PM
Presenter:
Kensuke Tamura
(Department of Physics, The University of Tokyo)
Authors:
Kensuke Tamura
(Department of Physics, The University of Tokyo)
Hosho Katsura
(Department of Physics, The University of Tokyo)
Motivated by the experiment, various constructions of models with QMBS states have been proposed [2]. However, most of the studies are limited to one-dimensional and/or spin systems, and only a few examples have been found in higher-dimensional and fermionic systems [3].
We propose a class of spinless fermionic models with QMBS states, defined on general higher-dimensional lattices.
In our construction, the models include density-assisted tunneling and are examples of models with disorder because the parameters do not have to be uniform.
We also show that the QMBS states can be constructed exactly and see that their entanglement entropy and expectation values of a physical quantity have atypical values.
[1] H. Bernien et al., Nature 551, 579 (2017)
[2] N. Shibata et al., Phys. Rev. Lett. 124, 180604 (2020)
[3] K. Pakrouski et al., arXiv:2106.10300 (2021)
*JSPS KAKENHI Grant Numbers JP21J11575 and JP18K03445, and JSPS Grant-in-Aid for Scientific Research on Innovative Areas, Grant No. JP20H04630
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