Microscopic Computational Model of a Superfluid

Details Microscopic Computational Model of a Superfluid Microscopic Computational Model of a Superfluid

2009-11-11

arxiv.org/abs/0911.2216v1

Physics

Condensed Matter

Other Condensed Matter

Scientific paper

A finite one-dimensional microscopic model of a superfulid is presented. The model consists of interacting Bose particles with an additional impurity particle confined to a ring. Both semiclassical and exact quantum calculations reveal dissipationless motion of impurity with increased effective mass due to its interaction with the excitations of Bose fluid. It is shown that both the excitation spectrum of Bose fluid and the excitation spectrum of impurity can be analyzed using the structure of the ground state of the system.

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