Microscopic Evolution of a Weakly Interacting Homogeneous Bose Gas
Soft Condensed Matter
2007-05-23 v2 High Energy Physics - Phenomenology
High Energy Physics - Theory
Quantum Physics
Abstract
We provide a detailed description of the nonequilibrium time evolution of an interacting homogeneous Bose-Einstein condensate. We use a nonperturbative in-medium quantum field theory approach as a microscopic model for the Bose gas. The real-time dynamics of the condensate is encoded in a set of self-consistent equations which corresponds to an infinite sum of ladder Feynman diagrams. The crucial role played by the interaction between fluctuations for the instability generation is thoroughly described.
Cite
@article{arxiv.cond-mat/0104463,
title = {Microscopic Evolution of a Weakly Interacting Homogeneous Bose Gas},
author = {D. G. Barci and E. S. Fraga and Rudnei O. Ramos},
journal= {arXiv preprint arXiv:cond-mat/0104463},
year = {2007}
}
Comments
7 pages, 1 figure (uses epsfig). To appear in Laser Physics (2001), Special Issue on Bose-Einstein Condensation of Trapped Atoms. A few misprints and errors have been corrected