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Title: Coherent Dynamics of Domain Formation in the Bose Ferromagnet

Abstract

We present a theory to describe domain formation observed very recently in a quenched {sup 87}Rb gas, a typical ferromagnetic spinor Bose system. An overlap factor is introduced to characterize the symmetry breaking of M{sub F}={+-}1 components for the F=1 ferromagnetic condensate. We demonstrate that the domain formation is a coeffect of the quantum coherence and the thermal relaxation. A thermally enhanced quantum oscillation is observed during the dynamical process of the domain formation. And the spatial separation of domains leads to significant decay of the M{sub F}=0 component fraction in an initial M{sub F}=0 condensate.

Authors:
 [1];  [2];  [1];  [3]
  1. Department of Physics, University of Science and Technology Beijing, Beijing 100083 (China)
  2. (Germany)
  3. (China)
Publication Date:
OSTI Identifier:
20951360
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 98; Journal Issue: 20; Other Information: DOI: 10.1103/PhysRevLett.98.200401; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BOSE-EINSTEIN CONDENSATION; DECAY; OSCILLATIONS; RELAXATION; RUBIDIUM 87; SYMMETRY BREAKING

Citation Formats

Gu Qiang, Institut fuer Laser-Physik, Universitaet Hamburg, Luruper Chaussee 149, 22761 Hamburg, Qiu Haibo, and Institute of Theoretical Physics, Lanzhou University, Lanzhou 730000. Coherent Dynamics of Domain Formation in the Bose Ferromagnet. United States: N. p., 2007. Web. doi:10.1103/PHYSREVLETT.98.200401.
Gu Qiang, Institut fuer Laser-Physik, Universitaet Hamburg, Luruper Chaussee 149, 22761 Hamburg, Qiu Haibo, & Institute of Theoretical Physics, Lanzhou University, Lanzhou 730000. Coherent Dynamics of Domain Formation in the Bose Ferromagnet. United States. doi:10.1103/PHYSREVLETT.98.200401.
Gu Qiang, Institut fuer Laser-Physik, Universitaet Hamburg, Luruper Chaussee 149, 22761 Hamburg, Qiu Haibo, and Institute of Theoretical Physics, Lanzhou University, Lanzhou 730000. Fri . "Coherent Dynamics of Domain Formation in the Bose Ferromagnet". United States. doi:10.1103/PHYSREVLETT.98.200401.
@article{osti_20951360,
title = {Coherent Dynamics of Domain Formation in the Bose Ferromagnet},
author = {Gu Qiang and Institut fuer Laser-Physik, Universitaet Hamburg, Luruper Chaussee 149, 22761 Hamburg and Qiu Haibo and Institute of Theoretical Physics, Lanzhou University, Lanzhou 730000},
abstractNote = {We present a theory to describe domain formation observed very recently in a quenched {sup 87}Rb gas, a typical ferromagnetic spinor Bose system. An overlap factor is introduced to characterize the symmetry breaking of M{sub F}={+-}1 components for the F=1 ferromagnetic condensate. We demonstrate that the domain formation is a coeffect of the quantum coherence and the thermal relaxation. A thermally enhanced quantum oscillation is observed during the dynamical process of the domain formation. And the spatial separation of domains leads to significant decay of the M{sub F}=0 component fraction in an initial M{sub F}=0 condensate.},
doi = {10.1103/PHYSREVLETT.98.200401},
journal = {Physical Review Letters},
number = 20,
volume = 98,
place = {United States},
year = {Fri May 18 00:00:00 EDT 2007},
month = {Fri May 18 00:00:00 EDT 2007}
}