Bose-Einstein Condensation and Supersolids

Author:

Alexanian Moorad1,Mkrtchian Vanik E.2

Affiliation:

1. Department of Physics and Physical Oceanography, University of North Carolina Wilmington, Wilmington, NC 28403-5606, USA

2. Institute for Physical Research, NAS of Armenia

Abstract

We consider interacting Bose particles in an external potential. It is shown that a Bose-Einstein condensate is possible at finite temperatures that describes a super solid in three dimensions (3D) for a wide range of potentials in the absence of an external potential. However, for 2D, a self-organized super solid exists for finite temperatures provided the interaction between bosons is nonlocal and of infinitely long-range. It is interesting that in the absence of the latter type of potential and in the presence of a lattice potential, there is no Bose-Einstein condensate and so in such a case, a 2D super solid is not possible at finite temperatures. We also propose the correct Bloch form of the condensate wave function valid for finite temperatures, which may be used as the correct trial wave function.

Publisher

National Academy of Sciences of the Republic of Armenia

Cited by 2 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Realization of a supersolid phase in a two-channel model;Journal of Physics B: Atomic, Molecular and Optical Physics;2023-04-11

2. Bose-Einstein Condensation and Quasicrystals;Armenian Journal of Physics;2021-07-02

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