Interaction Quenches of Fermi Gases

Details Interaction Quenches of Fermi Gases Interaction Quenches of Fermi Gases

2009-09-08

arxiv.org/abs/0909.1553v2

Phys. Rev. A 80, 061602(R) (2009)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 1 figure

Scientific paper

It is shown that the jump in the momentum distribution of Fermi gases evolves
smoothly for small and intermediate times once an interaction between the
fermions is suddenly switched on. The jump does not vanish abruptly. The loci
in momentum space where the jumps occur are those of the noninteracting Fermi
sea. No relaxation of the Fermi surface geometry takes place.

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