Published April 11, 2008
| Version v1
Journal article
Exact Solution for a Trapped Fermi Gas with Population Imbalance and BCS Pairing
- 1. Centre for Modern Physics, Chongqing University, Chongqing 400044 (China)
- 2. Dipartimento di Fisica 'E. R. Caianiello', Universita di Salerno, I-84081 Baronissi (Italy)
- 3. Laboratorio Regionale SuperMat, INFM-CNR, I-84081 Baronissi (Italy)
- 4. Laboratorio Regionale SuperMat, INFM-CNR, I-84081 Baronissi (Saudi Arabia) (Italy)
Description
The problem of a two-component Fermi gas in a harmonic trap, with an imbalanced population and a pairing interaction of zero total momentum, is mapped onto the exactly solvable reduced BCS model. For a one-dimensional trap, the complete ground state diagram is determined with various topological features in ground state energy spectra. In addition to the conventional two-shell density profile of a paired core and polarized outer wings, a three-shell structure as well as a double-peak superfluid distribution are unveiled
Additional details
Identifiers
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 100
- Journal Issue
- 14
- Journal Page Range
- p. 140406-140406.4
- ISSN
- 0031-9007
- CODEN
- PRLTAO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 40006547
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- BCS THEORY; ENERGY SPECTRA; EXACT SOLUTIONS; FERMI GAS; GROUND STATES; ONE-DIMENSIONAL CALCULATIONS; PAIRING INTERACTIONS; SUPERFLUIDITY; TOPOLOGY; TRAPPING; TRAPS
- Descriptors DEC
- ENERGY LEVELS; INTERACTIONS; MATHEMATICAL SOLUTIONS; MATHEMATICS; SPECTRA
Optional Information
- Notes
- (c) 2008 The American Physical Society