Doublon relaxation in the Bose-Hubbard model
Quantum Gases
2015-05-28 v1 High Energy Physics - Theory
Abstract
Decay of a high-energy double occupancy state, doublon, in a narrow-band lattice requires creation of a coherent many-particle excitation. This leads to an exponentially long relaxation time of such a state. We show that, if the average occupation number is sufficiently small, the corresponding exponent may be evaluated exactly. To this end we develop the quasiclassical approach to calculation of the high-order tree-level decay amplitudes.
Cite
@article{arxiv.1104.5210,
title = {Doublon relaxation in the Bose-Hubbard model},
author = {A. L. Chudnovskiy and D. M. Gangardt and A. Kamenev},
journal= {arXiv preprint arXiv:1104.5210},
year = {2015}
}
Comments
4 pages, 1 figure