# An exact stochastic field method for the interacting Bose gas at thermal equilibrium

@article{Carusotto2001AnES, title={An exact stochastic field method for the interacting Bose gas at thermal equilibrium}, author={Iacopo Carusotto and Yvan Castin}, journal={Journal of Physics B}, year={2001}, volume={34}, pages={4589-4608} }

We present a new exact method to numerically compute the thermodynamical properties of an interacting Bose gas in the canonical ensemble. As in our previous paper (Carusotto I, Castin Y and Dalibard J 2001 Phys. Rev. A 63 023606), we write the density operator ρ as an average of Hartree dyadics |N:1N:2| and we find stochastic evolution equations for the wavefunctions 1,2 such that the exact imaginary-time evolution of ρ is recovered after averaging over noise. In this way, the thermal…

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