Quantum phase transition in Bose-Einstein condensates with contact interaction
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
Pan, F., & Draayer, J. (2007). Quantum phase transition in Bose-Einstein condensates with contact interaction. Modern Physics Letters B, 21 (7), 377-382. https://doi.org/10.1142/S0217984907012803