Sound modes at the BCS-BEC crossover

Details Sound modes at the BCS-BEC crossover Sound modes at the BCS-BEC crossover

2005-03-04

arxiv.org/abs/cond-mat/0503101v3

Phys. Rev. A 73, 013607 (2006)

Physics

Condensed Matter

Superconductivity

To appear in Phys. Rev. A

Scientific paper

10.1103/PhysRevA.73.013607

First and second sound speeds are calculated for a uniform superfluid gas of fermi atoms as a function of temperature, density and interaction strength. The second sound speed is of particular interest as it is a clear signal of a superfluid component and it determines the critical temperature. The sound modes and their dependence on density, scattering length and temperature are calculated in the BCS, molecular BEC and unitarity limits and a smooth crossover is extrapolated. It is found that first and second sound undergo avoided crossing on the BEC side due to mixing. Consequently, they are detectable at crossover both as density and thermal waves in traps.

Affiliated with

Also associated with

No associations

Rating

Sound modes at the BCS-BEC crossover 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 Sound modes at the BCS-BEC crossover, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sound modes at the BCS-BEC crossover will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-200805