Collapse and revival oscillations as a probe for the tunneling amplitude in an ultra-cold Bose gas
arXiv:1010.1776 · doi:10.1103/PhysRevA.82.043601
Abstract
We present a theoretical study of the quantum corrections to the revival time due to finite tunneling in the collapse and revival of matter wave interference after a quantum quench. We study hard-core bosons in a superlattice potential and the Bose-Hubbard model by means of exact numerical approaches and mean-field theory. We consider systems without and with a trapping potential present. We show that the quantum corrections to the revival time can be used to accurately determine the value of the hopping parameter in experiments with ultracold bosons in optical lattices.
10 pages, 12 figures, typos in section 3A corrected
References in corpus (8)
- Many-Body Physics with Ultracold Gases
- Quench dynamics and non equilibrium phase diagram of the Bose-Hubbard model
- Strongly correlated fermions after a quantum quench
- Monte Carlo study of two-dimensional Bose-Hubbard model
- Emergence of quasi-condensates of hard-core bosons at finite momentum
- Free expansion of impenetrable bosons on one-dimensional optical lattices
- Superfluid to Mott-insulator transition of hardcore bosons in a superlattice
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