Bulletin of the American Physical Society
APS March Meeting 2021
Volume 66, Number 1
Monday–Friday, March 15–19, 2021; Virtual; Time Zone: Central Daylight Time, USA
Session B27: Disorder and Localization in AMO Systems I
11:30 AM–2:30 PM,
Monday, March 15, 2021
Sponsoring
Units:
DAMOP DCMP
Chair: Ehud Altman, University of California, Berkeley
Abstract: B27.00011 : Many-body flatband localization*
1:54 PM–2:06 PM
Live
Presenter:
Alexei Andreanov
(PCS, Institute for Basic Science, Daejeon)
Authors:
Carlo Danieli
(Condensed Matter, MPI PKS, Dresden)
Alexei Andreanov
(PCS, Institute for Basic Science, Daejeon)
Sergej Flach
(PCS, Institute for Basic Science, Daejeon)
Hamiltonians dressed with suitable short-range many-body interactions. This phenomenon, dubbed many-body flatband localization, is based on symmetries of both single-particle and interaction terms in the Hamiltonian, and it holds for any interaction strength. We propose a generator of corresponding Hamiltonians which covers both interacting bosons and fermions for arbitrary lattice dimensions, and we provide explicit examples of such models in one and two lattice dimensions. We also explicitly construct an extensive set of local integrals of motion for this set of models. Our results can be further generalized to long-range interactions as well as to systems lacking translational invariance.
*This work was supported by the Institute for Basic Science (Project No. IBS-R024-D1). S.F. acknowledges support by the New Zealand Institute for Advanced Study where part of this work was completed.
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