Ground state instability in systems of strongly interacting fermions

Details Ground state instability in systems of strongly interacting fermions Ground state instability in systems of strongly interacting fermions

1998-11-02

arxiv.org/abs/cond-mat/9811024v1

Physics

Condensed Matter

Strongly Correlated Electrons

The article has 11 pages, in Latex 2e (from Lyx), 3 eps figures or a ps file

Scientific paper

10.1134/1.567952

We analyze stability of a fermion system with model repulsive pair interaction potential. The possibility for different types of restructuring of the Fermi ground state (at sufficiently great coupling constant) is related to the analytic properties of such potential. In particular, for the screened Coulomb law it is shown that the restructuring cannot be of the Fermi condensation type, known earlier for some exactly solvable models, and instead it belongs to the class of topological transitions (TT). For this model, a phase diagram has been built in the variables "screening parameter - coupling constant" which displays two kinds of TT: a 5/2-kind similar to the known Lifshitz transitions in metals, and a 2-kind characteristic for a uniform strongly interacting system.

Affiliated with

Also associated with

No associations

Rating

Ground state instability in systems of strongly interacting fermions 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 Ground state instability in systems of strongly interacting fermions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ground state instability in systems of strongly interacting fermions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-592097