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Title: Interaction quenches of Fermi gases

Journal Article · · Physical Review. A
 [1]
  1. Lehrstuhl fuer Theoretische Physik I, Technische Universitaet Dortmund, Otto-Hahn Strasse 4, D-44221 Dortmund (Germany)

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.

OSTI ID:
21352284
Journal Information:
Physical Review. A, Vol. 80, Issue 6; Other Information: DOI: 10.1103/PhysRevA.80.061602; (c) 2009 The American Physical Society; ISSN 1050-2947
Country of Publication:
United States
Language:
English