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Integrability of one-dimensional Lindbladians from operator-space fragmentation

Abstract:
We introduce families of one-dimensional Lindblad equations describing open many-particle quantum systems that are exactly solvable in the following sense: (i) The space of operators splits into exponentially many (in system size) subspaces that are left invariant under the dissipative evolution; (ii) the time evolution of the density matrix on each invariant subspace is described by an integrable Hamiltonian. The prototypical example is the quantum version of the asymmetric simple exclusion process (ASEP) which we analyze in some detail. We show that in each invariant subspace the dynamics is described in terms of an integrable spin-1/2 XXZ Heisenberg chain with either open or twisted boundary conditions. We further demonstrate that Lindbladians featuring integrable operator-space fragmentation can be found in spin chains with arbitrary local physical dimensions.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1103/physreve.102.062210

Authors


More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Theoretical Physics
Role:
Author
ORCID:
0000-0002-1127-5830


Publisher:
American Physical Society
Journal:
Physical Review E More from this journal
Volume:
102
Issue:
6
Article number:
062210
Publication date:
2020-12-14
Acceptance date:
2020-11-25
DOI:
EISSN:
2470-0053
ISSN:
2470-0045
Pmid:
33466089


Language:
English
Keywords:
Pubs id:
1151849
Local pid:
pubs:1151849
Deposit date:
2021-05-06

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