Temperature dependent Bogoliubov approximation in the classical fields approach to weakly interacting Bose gas

Physics – Condensed Matter

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

9 pages, 12 figures

Scientific paper

10.1088/0953-4075/37/13/010

A classical fields approximation to the finite temperature microcanonical thermodynamics of weakly interacting Bose gas is applied to the idealized case of atoms confined in a box with periodic boundary conditions. We analyze in some detail the microcanonical temperature in the model. We also analyze the spectral properties of classical amplitudes of the plane waves -- the eigenmodes of the time averaged one--particle density matrix. Looking at the zero momentum component -- the order parameter of the condensate, we obtain the nonperturbative results for the chemical potential. Analogous analysis of the other modes yields nonperturbative temperature dependent Bogoliubov frequencies and their damping rates. Damping rates are linear functions of momenta in the phonon range and show more complex behavior for the particle sector. Where available, we make comparison with the analytic estimates of these quantities.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Temperature dependent Bogoliubov approximation in the classical fields approach to weakly interacting Bose gas 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 Temperature dependent Bogoliubov approximation in the classical fields approach to weakly interacting Bose gas, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Temperature dependent Bogoliubov approximation in the classical fields approach to weakly interacting Bose gas will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-518714

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.