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Exact solution of the Floquet-PXP cellular automaton

Abstract:
We study the dynamics of a bulk deterministic Floquet model, the Rule 201 synchronous one-dimensional reversible cellular automaton (RCA201). The system corresponds to a deterministic, reversible, and discrete version of the PXP model, whereby a site flips only if both its nearest neighbors are unexcited. We show that the RCA201 (Floquet-PXP) model exhibits ballistic propagation of interacting quasiparticles-or solitons-corresponding to the domain walls between nontrivial threefold vacuum states. Starting from the quasiparticle picture, we find the exact matrix product state form of the nonequilibrium stationary state for a range of boundary conditions, including both periodic and stochastic. We discuss further implications of the integrability of the model.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1103/physreve.102.062107

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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Theoretical Physics
Role:
Author
ORCID:
0000-0001-6791-8594


Publisher:
American Physical Society
Journal:
Physical Review E More from this journal
Volume:
102
Issue:
6-1
Article number:
62107
Place of publication:
United States
Publication date:
2020-12-03
Acceptance date:
2020-10-30
DOI:
EISSN:
2470-0053
ISSN:
2470-0045
Pmid:
33466043


Language:
English
Keywords:
Pubs id:
1159782
Local pid:
pubs:1159782
Deposit date:
2021-11-19

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