Momentum Distribution Dynamics of a Tonks-Girardeau Gas: Bragg Reflections of a Quantum Many-Body Wave Packet

Pezer, Robert and Buljan, Hrvoje (2007) Momentum Distribution Dynamics of a Tonks-Girardeau Gas: Bragg Reflections of a Quantum Many-Body Wave Packet. Physical Review Letters, 98 (24). pp. 240403-4. ISSN 0031-9007

[img]
Preview
PDF - Accepted Version
Language: English

Download (450kB) | Preview

Abstract

The momentum distribution (MD) dynamics of a Tonks-Girardeau (TG) gas is studied in the context of Bragg reflections of a many-body wave packet. We find strong suppression of a Bragg reflection peak for a large and dense TG wave packet; our observation illustrates the dependence of the MD on the interactions and wave function symmetry. The MD is calculated from the reduced single-particle density matrix (RSPDM). We develop a method for calculating the RSPDM of a TG gas, which is operative for a large number of particles, and does not depend on the external potential and the state of the system. The method is based on a formula expressing the RSPDM via a dynamically evolving single-particle basis.

Item Type: Article
Keywords: interacting many-body systems, nonequilibrium dynamics, Bose gases, Bragg reflections
Date: June 2007
Subjects: NATURAL SCIENCES > Physics
Additional Information: Copyright (2007) by the American Physical Society.
Divisions: Faculty of Science > Department of Physics
Project code: 119-0000000-1015
Publisher: American Physical Society
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 27 May 2014 16:09
Last Modified: 27 May 2014 16:09
URI: http://digre.pmf.unizg.hr/id/eprint/1806

Actions (login required)

View Item View Item

Nema podataka za dohvacanje citata