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Title:

Asymptotic Quantum Many-Body Scars

Document type:
Zeitschriftenaufsatz
Author(s):
Gotta, Lorenzo; Moudgalya, Sanjay; Mazza, Leonardo
Abstract:
We consider a quantum lattice spin model featuring exact quasiparticle towers of eigenstates with low entanglement at finite size, known as quantum many-body scars (QMBS). We show that the states in the neighboring part of the energy spectrum can be superposed to construct entire families of low-entanglement states whose energy variance decreases asymptotically to zero as the lattice size is increased. As a consequence, they have a relaxation time that diverges in the thermodynamic limit, and th...     »
Journal title:
Physical Review Letters 2023-10
Year:
2023
Journal volume:
131
Journal issue:
19
Fulltext / DOI:
doi:10.1103/physrevlett.131.190401
Publisher:
American Physical Society (APS)
E-ISSN:
0031-90071079-7114
Date of publication:
07.11.2023
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