Broken-axisymmetry phase of a spin-1 ferromagnetic Bose-Einstein condensate

Keiji Murata, Hiroki Saito, and Masahito Ueda
Phys. Rev. A 75, 013607 – Published 5 January 2007

Abstract

A spin-1 ferromagnetic Bose-Einstein condensate subject to a certain magnetic field exhibits a broken-axisymmetry phase in which the magnetization tilts against the applied magnetic field due to the competition between ferromagnetism and linear and quadratic Zeeman effects. The Bogoliubov analysis shows that in this phase two Goldstone modes associated with U(1) and SO(2) symmetry breakings exist, in which phonons and magnons are coupled to restore the two broken symmetries.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Received 7 July 2006

DOI:https://doi.org/10.1103/PhysRevA.75.013607

©2007 American Physical Society

Authors & Affiliations

Keiji Murata1, Hiroki Saito2, and Masahito Ueda1,3

  • 1Department of Physics, Tokyo Institute of Technology, Tokyo 152-8551, Japan
  • 2Department of Applied Physics and Chemistry, The University of Electro-Communications, Tokyo 182-8585, Japan
  • 3ERATO, Japan Science and Technology Corporation (JST), Saitama 332-0012, Japan

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 75, Iss. 1 — January 2007

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
×