Differential equation for temperature-dependent correlation function of Delta-interacting Bose gas
نویسنده
چکیده
We consider the quantum nonlinear Schrödinger equation in one space and one time dimension. It is equivalent to Bose gas with delta interaction. We are interested in the non-free-fermionic case. We calculate temperature-dependent correlation functions. The determinant representation for correlation functions simplifies in the small mass limit of the Bose particle. In this limit we describe the correlation function in terms of the Maxwell-Bloch differential equation. We solve this equation at large distance and evaluate asymptotics of correlation functions. 1 [email protected] 2 [email protected] 2 [email protected] ⋆ Research Fellow of the Japan Society for the Promotion of Science. 1
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