Published March 10, 2006
| Version v1
Journal article
Spin 1/2 Fermions in the Unitary Regime: A Superfluid of a New Type
- 1. Department of Physics, University of Washington, Seattle, Washington 98195-1560 (United States)
- 2. Faculty of Physics, Warsaw University of Technology, ulica Koszykowa 75, 00-662 Warsaw (Poland)
Description
We study, in a fully nonperturbative calculation, a dilute system of spin 1/2 interacting fermions, characterized by an infinite scattering length at finite temperatures. Various thermodynamic properties and the condensate fraction are calculated and we also determine the critical temperature for the superfluid-normal phase transition in this regime. The thermodynamic behavior appears as a rather surprising and unexpected melange of fermionic and bosonic features. The thermal response of a spin 1/2 fermion at the BCS-BEC crossover should be classified as that of a new type of superfluid
Additional details
Identifiers
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 96
- Journal Issue
- 9
- Journal Page Range
- p. 090404-090404.4
- ISSN
- 0031-9007
- CODEN
- PRLTAO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 37081271
- Subject category
- S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
- Descriptors DEI
- BOSE-EINSTEIN CONDENSATION; CRITICAL TEMPERATURE; FERMIONS; PHASE TRANSFORMATIONS; SCATTERING LENGTHS; SPIN; SUPERFLUIDITY
- Descriptors DEC
- ANGULAR MOMENTUM; DIMENSIONS; LENGTH; PARTICLE PROPERTIES; PHYSICAL PROPERTIES; THERMODYNAMIC PROPERTIES; TRANSITION TEMPERATURE
Optional Information
- Notes
- (c) 2006 The American Physical Society