Multicomponent strongly attractive Fermi gas: A color superconductor in a one-dimensional harmonic trap

Liu, Xia-Ji, Hu, Hui and Drummond, Peter D. (2008) Multicomponent strongly attractive Fermi gas: A color superconductor in a one-dimensional harmonic trap. Physical Review A, 77 1: . doi:10.1103/PhysRevA.77.013622

Attached Files (Some files may be inaccessible until you login with your UQ eSpace credentials)
Name Description MIMEType Size Downloads
UQ174065_OA.pdf Full text (open access) application/pdf 536.31KB 0

Author Liu, Xia-Ji
Hu, Hui
Drummond, Peter D.
Title Multicomponent strongly attractive Fermi gas: A color superconductor in a one-dimensional harmonic trap
Journal name Physical Review A   Check publisher's open access policy
ISSN 1050-2947
1094-1622
Publication date 2008-01-01
Sub-type Article (original research)
DOI 10.1103/PhysRevA.77.013622
Open Access Status File (Publisher version)
Volume 77
Issue 1
Total pages 14
Place of publication College Park, MD, United States
Publisher American Physical Society
Language eng
Abstract Recent advances in ultracold atomic Fermi gases make it possible to achieve a fermionic superfluid with multiple spin components. In this context, any mean-field description is expected to fail, owing to the presence of tightly bound clusters or molecules that consist of more than two particles. Here we present a detailed study of a strongly interacting multicomponent Fermi gas in a highly elongated or quasi-one-dimensional harmonic trap, which could be readily obtained in experiment. By using the exact Bethe ansatz solution and a local density approximation treatment of the harmonic trap, we investigate the equation of state of the multicomponent Fermi gas in both a homogeneous and trapped environment, as well as the density profiles and low-energy collective modes. The binding energy of multicomponent bound clusters is also given. We show that there is a peak in the collective mode frequency at the critical density for a deconfining transition to a many-body state that is analogous to the quark color superconductor state expected in neutron stars.
Keyword Delta-function Interaction
Many-body Problems
Ground-state
Systems
Atoms
Superfluidity
transition
Crossover
Soliton
BCS
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Article #013622

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2009 Higher Education Research Data Collection
School of Mathematics and Physics
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 25 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 23 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Tue, 07 Apr 2009, 01:10:18 EST by Stephanie Golding on behalf of ARC Centre of Excellence for Quantum-Atom Optics