Rotating ground states of a one-dimensional spin-polarized gas of fermionic atoms with attractive p-wave interactions on a mesoscopic ring

The major finding of this Letter is that a one-dimensional spin-polarized gas composed of an even number of fermionic atoms interacting via attractive p-wave interactions and confined to a mesoscopic ring has a degenerate pair of ground states that are oppositely rotating. In any realization the gas...

Full description

Saved in:

Bibliographic Details
Published in:	Physical review letters Vol. 100; no. 20; p. 200403
Main Authors:	Girardeau, M D, Wright, E M
Format:	Journal Article
Language:	English
Published:	United States 23-05-2008
Subjects:	ATOMS CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS EXCHANGE INTERACTIONS FERMIONS GROUND STATES ONE-DIMENSIONAL CALCULATIONS P WAVES SPIN ORIENTATION STATISTICS TOPOLOGY
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	The major finding of this Letter is that a one-dimensional spin-polarized gas composed of an even number of fermionic atoms interacting via attractive p-wave interactions and confined to a mesoscopic ring has a degenerate pair of ground states that are oppositely rotating. In any realization the gas will be measured to rotate one way or the other in spite of the fact that there is no external rotation or bias fields. Our goal is to show that this counterintuitive finding is a natural consequence of the combined effects of quantum statistics, ring topology, and exchange interactions.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0031-9007 1079-7114
DOI:	10.1103/PhysRevLett.100.200403