Phase separation in a two-species Bose mixture

Tapan Mishra, Ramesh V. Pai, and B. P. Das
Phys. Rev. A 76, 013604 – Published 3 July 2007

Abstract

We obtain the ground-state quantum phase diagram for a two-species Bose mixture in a one-dimensional optical lattice using the finite-size density-matrix renormalization group method. We discuss our results for different combinations of inter- and intraspecies interaction strengths with commensurate and incommensurate fillings of the bosons. The phases we have obtained are a superfluid and a Mott insulator, and a phase separation where the two different species reside in spatially separate regions. The spatially separated phase is further classified into phase-separated superfluid and Mott insulator. The phase separation appears for all the fillings we have considered, whenever the interspecies interaction is slightly larger than the intraspecies interactions.

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  • Received 4 October 2006

DOI:https://doi.org/10.1103/PhysRevA.76.013604

©2007 American Physical Society

Authors & Affiliations

Tapan Mishra1,*, Ramesh V. Pai2,†, and B. P. Das1,‡

  • 1Indian Institute of Astrophysics, II Block, Kormangala, Bangalore, 560 034, India
  • 2Department of Physics, Goa University, Taleigao Plateau, Goa 403 206, India

  • *Email address: tapan@iiap.res.in
  • Email address: rvpai@unigoa.ac.in
  • Email address: das@iiap.res.in

Comments & Replies

Comment on “Phase separation in a two-species Bose mixture”

Fei Zhan and Ian P. McCulloch
Phys. Rev. A 89, 057601 (2014)

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Vol. 76, Iss. 1 — July 2007

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