Infrared behavior of interacting bosons at zero temperature

Details Infrared behavior of interacting bosons at zero temperature Infrared behavior of interacting bosons at zero temperature

2011-06-24

arxiv.org/abs/1106.4922v1

Laser Physics 21, 1470 (2011)

Physics

Condensed Matter

Quantum Gases

8 pages, 4 figures. Proceedings of the 19th International Laser Physics Workshop, LPHYS'10 (Foz do Iguacu, Brazil, July 5-9, 2

Scientific paper

10.1134/S1054660X11150059

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 present two approaches that are free of infrared divergences -- Popov's hydrodynamic theory and the non-perturbative renormalization group -- and allow us to obtain the exact infrared behavior of the correlation functions. We also point out the connection between the infrared behavior in the superfluid phase and the critical behavior at the superfluid--Mott-insulator transition in the Bose-Hubbard model.

Affiliated with

Also associated with

No associations

Rating

Infrared behavior of interacting bosons at zero temperature does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Infrared behavior of interacting bosons at zero temperature, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Infrared behavior of interacting bosons at zero temperature will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-393855