Infrared behavior of interacting bosons at zero temperature
Quantum Gases
2011-06-27 v1
Abstract
We review the infrared behavior of interacting bosons at zero temperature. After a brief discussion of the Bogoliubov approximation and the breakdown of perturbation theory due to infrared divergences, we show how the non-perturbative renormalization group enables to obtain the exact infrared behavior of the correlation functions.
Cite
@article{arxiv.1106.4921,
title = {Infrared behavior of interacting bosons at zero temperature},
author = {N. Dupuis},
journal= {arXiv preprint arXiv:1106.4921},
year = {2011}
}
Comments
8 pages, 2 figures. Proceedings of the International Conference on frustrated spin systems, cold atoms and nanomaterials (Hanoi, Vietnam, July 14-16, 2010)