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Title: Thermodynamics of Interacting Fermions in Atomic Traps

Abstract

We calculate the entropy in a trapped, resonantly interacting Fermi gas as a function of temperature for a wide range of magnetic fields between the BCS and Bose-Einstein condensation end points. This provides a basis for the important technique of adiabatic sweep thermometry and serves to characterize quantitatively the evolution and nature of the excitations of the gas. The results are then used to calibrate the temperature in several ground breaking experiments on {sup 6}Li and {sup 40}K.

Authors:
; ;  [1]
  1. James Franck Institute and Department of Physics, University of Chicago, Chicago, Illinois 60637 (United States)
Publication Date:
OSTI Identifier:
20771622
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 95; Journal Issue: 26; Other Information: DOI: 10.1103/PhysRevLett.95.260405; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BCS THEORY; BOSE-EINSTEIN CONDENSATION; ENTROPY; EVOLUTION; EXCITATION; FERMI GAS; FERMIONS; LITHIUM 6; MAGNETIC FIELDS; POTASSIUM 40; SUPERFLUIDITY; TEMPERATURE DEPENDENCE; THERMODYNAMICS; TRAPPING; TRAPS

Citation Formats

Chen Qijin, Stajic, Jelena, and Levin, K. Thermodynamics of Interacting Fermions in Atomic Traps. United States: N. p., 2005. Web. doi:10.1103/PhysRevLett.95.260405.
Chen Qijin, Stajic, Jelena, & Levin, K. Thermodynamics of Interacting Fermions in Atomic Traps. United States. doi:10.1103/PhysRevLett.95.260405.
Chen Qijin, Stajic, Jelena, and Levin, K. Sat . "Thermodynamics of Interacting Fermions in Atomic Traps". United States. doi:10.1103/PhysRevLett.95.260405.
@article{osti_20771622,
title = {Thermodynamics of Interacting Fermions in Atomic Traps},
author = {Chen Qijin and Stajic, Jelena and Levin, K.},
abstractNote = {We calculate the entropy in a trapped, resonantly interacting Fermi gas as a function of temperature for a wide range of magnetic fields between the BCS and Bose-Einstein condensation end points. This provides a basis for the important technique of adiabatic sweep thermometry and serves to characterize quantitatively the evolution and nature of the excitations of the gas. The results are then used to calibrate the temperature in several ground breaking experiments on {sup 6}Li and {sup 40}K.},
doi = {10.1103/PhysRevLett.95.260405},
journal = {Physical Review Letters},
number = 26,
volume = 95,
place = {United States},
year = {Sat Dec 31 00:00:00 EST 2005},
month = {Sat Dec 31 00:00:00 EST 2005}
}