arXiv:0811.3115 · International Journal of Modern Physics B
COEXISTENCE OF NON-CONVENTIONAL CONDENSATES IN TWO-LEVEL BOSE ATOM SYSTEM
M. CORGINI, Constanza Rojas-Molina, D. P. SANKOVICH
Abstract
In the framework of the Bogolyubov approximation and using the Bogolyubov inequalities, we give a simple proof of the coexistence of two non-conventional Bose–Einstein condensates in the case of some superstable Bose system whose atoms have an internal two-level structure, and their energy operators in the second quantized form depend on the number operators only.