Title
Extended Gross-Pitaevskii description for the dynamics of thermal dilute Bose gasesExtended Gross-Pitaevskii description for the dynamics of thermal dilute Bose gases
Author
Faculty/Department
Faculty of Sciences. Physics
Research group
Theory of quantum systems and complex systems
Publication type
article
Publication
Lancaster, Pa,
Subject
Physics
Source (journal)
Physical review : A : atomic, molecular and optical physics. - Lancaster, Pa, 1990 - 2015
Volume/pages
90(2014):3, 6 p.
ISSN
1094-1622
1050-2947
1050-2947
Article Reference
033611
Carrier
E-only publicatie
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
We introduce a technique to simulate the dynamics of a thermal dilute Bose gas. With the method of the nonequilibrium statistical operator, a correction to the Gross-Pitaevskii equation (GPE) is derived. This modification of the GPE describes spontaneous scattering processes. It regularizes the ultraviolet catastrophe and captures the dynamics of the particles at all energies, including the tail of the momentum distribution. We apply our model to the simulation of an evaporative cooling quench of a two-dimensional Bose gas.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/b0566b/8514.pdf
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