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Title: Particle correlations in a Fermi superfluid

Abstract

We discuss the correlations between particles of different momentum in a superfluid Fermi gas, accessible through noise measurements of the absorption images of the expanded gas. We include two elements missing from the simplest treatment, based on the BCS wavefunction: the explicit use of a conserving approximation satisfying particle number conservation and the inclusion of the contribution from Cooper pairs at finite momentum. We expect the latter to be a significant issue in the strongly correlated state emerging in the BCS-Bose-Einstein condensate (BEC) crossover.

Authors:
 [1]
  1. Rudolf Peierls Centre for Theoretical Physics, 1 Keble Road, Oxford OX1 3NP, United Kingdom and All Souls College, Oxford OX1 4AL (United Kingdom)
Publication Date:
OSTI Identifier:
20786628
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 73; Journal Issue: 1; Other Information: DOI: 10.1103/PhysRevA.73.011602; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ABSORPTION; APPROXIMATIONS; BOSE-EINSTEIN CONDENSATION; COOPER PAIRS; CORRELATIONS; FERMI GAS; FERMIONS; SUPERFLUIDITY; WAVE FUNCTIONS

Citation Formats

Lamacraft, A. Particle correlations in a Fermi superfluid. United States: N. p., 2006. Web. doi:10.1103/PHYSREVA.73.0.
Lamacraft, A. Particle correlations in a Fermi superfluid. United States. doi:10.1103/PHYSREVA.73.0.
Lamacraft, A. Sun . "Particle correlations in a Fermi superfluid". United States. doi:10.1103/PHYSREVA.73.0.
@article{osti_20786628,
title = {Particle correlations in a Fermi superfluid},
author = {Lamacraft, A.},
abstractNote = {We discuss the correlations between particles of different momentum in a superfluid Fermi gas, accessible through noise measurements of the absorption images of the expanded gas. We include two elements missing from the simplest treatment, based on the BCS wavefunction: the explicit use of a conserving approximation satisfying particle number conservation and the inclusion of the contribution from Cooper pairs at finite momentum. We expect the latter to be a significant issue in the strongly correlated state emerging in the BCS-Bose-Einstein condensate (BEC) crossover.},
doi = {10.1103/PHYSREVA.73.0},
journal = {Physical Review. A},
number = 1,
volume = 73,
place = {United States},
year = {Sun Jan 15 00:00:00 EST 2006},
month = {Sun Jan 15 00:00:00 EST 2006}
}