Quantum scars of bosons with correlated hopping
Abstract
Recent experiments on Rydberg atom arrays have found evidence of anomalously slow thermalization and persistent density oscillations, which have been interpreted as a many-body analog of the phenomenon of quantum scars. Periodic dynamics and atypical scarred eigenstates originate from a “hard” kinetic constraint: the neighboring Rydberg atoms cannot be simultaneously excited. Here we propose a realization of quantum many-body scars in a 1D bosonic lattice model with a “soft” constraint in the form of density-assisted hopping. We discuss the relation of this model to the standard Bose-Hubbard model and possible experimental realizations using ultracold atoms. We find that this model exhibits similar phenomenology to the Rydberg atom chain, including weakly entangled eigenstates at high energy densities and the presence of a large number of exact zero energy states, with distinct algebraic structure.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jun 01, 2020
- Source ID
- 10.1038/s42005-020-0364-9
Entities
People
- Ana Hudomal
- Ivana Vasić
- Nicolas Regnault
- Zlatko Papic
Organizations
- European Cooperation in Science and Technology
- Ministry of Education, Science and Technological Development of the Republic of Serbia
- National Science Foundation
- Office of Naval Research
- Simons Foundation
- United States Department of Energy