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Title: Interaction quenches of Fermi gases

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.
Authors:
 [1]
  1. Lehrstuhl fuer Theoretische Physik I, Technische Universitaet Dortmund, Otto-Hahn Strasse 4, D-44221 Dortmund (Germany)
Publication Date:
OSTI Identifier:
21352284
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 80; Journal Issue: 6; Other Information: DOI: 10.1103/PhysRevA.80.061602; (c) 2009 The American Physical Society
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; FERMI GAS; FERMI LEVEL; FERMIONS; GEOMETRY; INTERACTIONS; RELAXATION; THERMODYNAMICS ENERGY LEVELS; MATHEMATICS