Phase-space dynamics of Bose condensates: Interference versus interaction

Autor:	Axel Schenzle, A. Röhrl, H. Wallis, M. Naraschewski
Rok vydání:	1997
Předmět:	Condensed Matter::Quantum Gases Physics Nonlinear system Quantum electrodynamics Phase space Quantum mechanics Dynamics (mechanics) Visibility (geometry) Wigner distribution function Interference (wave propagation) Reduction (mathematics) Atomic and Molecular Physics and Optics Gauge symmetry
Zdroj:	Physical Review A. 55:2109-2119
ISSN:	1094-1622 1050-2947
Popis:	We study theoretically the macroscopic interference of two independent Bose condensates released from a double potential trap. The observation of fringes could serve as a test for the paradigm of broken gauge symmetry. By numerical solution of the nonlinear Schr\"odinger equation in three dimensions, the consecutive stages of expansion, overlap, and interference are investigated in order to facilitate the design of future experiments. The phase-space dynamics of the condensates is analyzed by means of the Wigner function. It turns out that the distance of interference fringes grows linearly in time with a velocity inversely proportional to the initial distance of the two condensates. The collisional reduction of the fringe visibility is estimated.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::65e1641bbbc21e087ae3434d0317ba66 https://doi.org/10.1103/physreva.55.2109 Zobrazit plný text záznamu