Journal
PHYSICAL REVIEW B
Volume 101, Issue 17, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.101.174308
Keywords
-
Funding
- National Science Foundation (NSF)
- Center for Ultracold Atoms, DOE
- Vannevar Bush Fellowship
- Herschel Smith Undergraduate Program
- Jacob Wendell Scholarship Prize
- NSF
- Smithsonian Astrophysical Observatory
- Gordon and Betty Moore Foundation's EPiQS Initiative [GBMF8682]
- Moore Foundation's EPiQS Initiative [GBMF4306]
- National University of Singapore (NUS) [AY2019/2020]
Ask authors/readers for more resources
We study weak ergodicity breaking in a one-dimensional, nonintegrable spin-1 XY model. We construct for it an exact, highly excited eigenstate, which despite its large energy density, can be represented analytically by a finite bond-dimension matrix product state (MPS) with area-law entanglement. Upon a quench to a finite Zeeman field, the state undergoes periodic dynamics with perfect many-body revivals, in stark contrast to other generic initial states which instead rapidly thermalize. This dynamics can be completely understood in terms of the evolution of entangled virtual spin-1/2 degrees of freedom, which in turn underpin the presence of an extensive tower of strong-eigenstate thermalization hypothesis (ETH)-violating many-body eigenstates. The resulting quantum many-body scars are therefore of novel origin. Our results provide important analytical insights into the nature and entanglement structure of quantum many-body scars.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available