Rotonlike Instability and Pattern Formation in Spinor Bose-Einstein Condensates

Michał Matuszewski
Phys. Rev. Lett. 105, 020405 – Published 9 July 2010

Abstract

We show that metastable phases of an antiferromagnetic spin-1 condensate in a simple model with pure contact interactions can exhibit a rotonlike minimum in the excitation spectrum. The introduction of a magnetic field gives rise to the instability of roton modes, which can lead to spontaneous emergence of regular periodic, polygonal, polyhedral, or crystalline patterns, as shown in numerical simulations within the truncated Wigner approximation. An explanation of the occurrence of rotonlike instability is given based on the energy and spin conservation laws.

  • Figure
  • Figure
  • Figure
  • Figure
  • Received 16 April 2010

DOI:https://doi.org/10.1103/PhysRevLett.105.020405

©2010 American Physical Society

Authors & Affiliations

Michał Matuszewski

  • Instytut Fizyki PAN, Aleja Lotników 32/46, 02-668 Warsaw, Poland, and Nonlinear Physics Center, Research School of Physics and Engineering, Australian National University, Canberra ACT 0200, Australia

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 105, Iss. 2 — 9 July 2010

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 Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×