MISC

査読有り
2009年

Particle Creation in Bose-Einstein Condensates: Numerical Analysis of the Bogoliubov-de Gennes Equation for Trapped Ultracold Atoms

25TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT25), PART 3
  • M. Kobayashi
  • ,
  • Y. Kurita
  • ,
  • T. Morinari
  • ,
  • M. Tsubota
  • ,
  • H. Ishihara

150
3
記述言語
英語
掲載種別
DOI
10.1088/1742-6596/150/3/032044
出版者・発行元
IOP PUBLISHING LTD

In this paper, we formulate quantum field theory on an analogue curved spacetime in a Bose-Einstein condensate where quantum particles on curved spacetime are equated with Bogoliubov quasi-particle excitations on the Bose-Einstein condensate. By using our formulation, we numerically investigate a particle creation in analogue expanding Universe which can be expressed as Bogoliubov quasiparticles in an expanding Bose-Einstein condensate and obtain its spectrum which shows the thermal Maxwell-Boltzmann distribution, the temperature of which can be experimentally accessible. This is the first direct numerical simulation for the particle creation and its spectrum on analogue curved spacetime by using the system of Bose-Einstein condensates.

Web of Science ® 被引用回数 : 17

リンク情報
DOI
https://doi.org/10.1088/1742-6596/150/3/032044
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000289643200044&DestApp=WOS_CPL

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