Path-integral approach to the thermodynamics of bosons with memory

Subtitle:density and correlation functions

Expanding upon previous work, using the path-integral formalism we derive expressions for the one-particle reduced density matrix and the two-point correlation function for a quadratic system of bosons that interact through a general class of memory kernels. The results are applied to study the density, condensate fraction, and pair correlation function of trapped bosons harmonically coupled to external distinguishable masses.

Publication year:2021

Keywords:A1 Journal article

Accessibility:Closed