Beyond-mean-field behavior of large Bose-Einstein condensates in double-well potentials

Bettina Gertjerenken and Christoph Weiss
Phys. Rev. A 88, 033608 – Published 6 September 2013

Abstract

For the dynamics of Bose-Einstein condensates (BECs), differences between mean-field (Gross-Pitaevskii) physics and N-particle quantum physics often disappear if the BEC becomes larger and larger. In particular, the time scale for which both dynamics agree should thus become larger if the particle number increases. For BECs in a double-well potential, we find both examples for which this is the case and examples for which differences remain even for huge BECs on experimentally realistic short time scales. By using a combination of numerical and analytical methods, we show that the differences remain visible on the level of expectation values even beyond the largest possible numbers realized experimentally for BECs with ultracold atoms.

  • Figure
  • Figure
  • Figure
  • Figure
  • Received 5 July 2013

DOI:https://doi.org/10.1103/PhysRevA.88.033608

©2013 American Physical Society

Authors & Affiliations

Bettina Gertjerenken1,* and Christoph Weiss1,2

  • 1Institut für Physik, Carl von Ossietzky Universität, D-26111 Oldenburg, Germany
  • 2Joint Quantum Centre (JQC) Durham-Newcastle, Department of Physics, Durham University, Durham DH1 3LE, United Kingdom

  • *b.gertjerenken@uni-oldenburg.de

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 88, Iss. 3 — September 2013

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review A

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×