Universität zu Köln

Roscher, Dietrich and Braun, Jens (2017). In-medium bound-state formation and inhomogeneous condensation in Fermi gases in a hard-wall box. J. Phys. B-At. Mol. Opt. Phys., 50 (20). BRISTOL: IOP PUBLISHING LTD. ISSN 1361-6455

Full text not available from this repository.

Abstract

The formation of bosonic bound states underlies the formation of a superfluid ground state in the many-body phase diagram of ultracold Fermi gases. We study bound-state formation in a spin- and mass-imbalanced ultracold Fermi gas confined in a box with hard-wall boundary conditions. Because of the presence of finite Fermi spheres, the center-of-mass momentum of the potentially formed bound states can be finite, depending on the parameters controlling mass and spin imbalance as well as the coupling strength. We exploit this observation to estimate the potential location of inhomogeneous phases in the many-body phase diagram as a function of spin-and mass imbalance as well as the box size. Our results suggest that a hard-wall box does not alter substantially the many-body phase diagram calculated in the thermodynamic limit. Therefore, such a box may serve as an ideal trap potential to bring experiment and theory closely together and facilitate the search for exotic inhomogeneous ground states.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Roscher, Dietrich UNSPECIFIED UNSPECIFIED UNSPECIFIED Braun, Jens UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-213880
DOI:	10.1088/1361-6455/aa8b4b
Journal or Publication Title:	J. Phys. B-At. Mol. Opt. Phys.
Volume:	50
Number:	20
Date:	2017
Publisher:	IOP PUBLISHING LTD
Place of Publication:	BRISTOL
ISSN:	1361-6455
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language BOSE-EINSTEIN CONDENSATION; SUPERFLUIDITY; IMBALANCE; ATOMS Multiple languages Optics; Physics, Atomic, Molecular & Chemical Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/21388