Quantum phase transition in Bose-Einstein condensates with contact interaction

Document Type

Article

Publication Date

3-20-2007

Abstract

Entanglement and occupation probabilities along the yrast line in the interacting Bose-Einstein condensates with contact interaction in two dimension is studied for the angular momentum quantum number L ≤ n with the help of a simple improved Mathematica package. Results of the entanglement along the yrast line up to L = 6 and occupation probabilities for the yrast states up to L = 5 are calculated, which show that the system undergoes a quantum phase transition for all the yrast states, of which the total number of bosons serves as the control parameter. The critical point is near n = L + 1. © World Scientific Publishing Company.

Publication Source (Journal or Book title)

Modern Physics Letters B

First Page

377

Last Page

382

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