Collective excitations in a fermion-fermion mixture with different Fermi surfaces

Details Collective excitations in a fermion-fermion mixture with different Fermi surfaces Collective excitations in a fermion-fermion mixture with different Fermi surfaces

2003-09-15

arxiv.org/abs/cond-mat/0309344v1

Phys. Rev. A 68, 055602 (2003).

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages. To be published in Phys. Rev. A

Scientific paper

10.1103/PhysRevA.68.055602

In this paper, collective excitations in a homogeneous fermion-fermion mixture with different Fermi surfaces are studied. In the Fermi liquid phase, the zero-sound velocity is found to be larger than the largest Fermi velocity. With attractive interactions, the superfluid phase appears below a critical temperature, and the phase mode is the low-energy collective excitation. The velocity of the phase mode is proportional to the geometric mean of the two Fermi velocities. The difference between the two velocities may serve as a tool to detect the superfluid phase.

Affiliated with

Also associated with

No associations

Rating

Collective excitations in a fermion-fermion mixture with different Fermi surfaces 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 Collective excitations in a fermion-fermion mixture with different Fermi surfaces, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Collective excitations in a fermion-fermion mixture with different Fermi surfaces will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-510967