Thermal Properties of Interacting Bose Fields and Imaginary-Time Stochastic Differential Equations

Details Thermal Properties of Interacting Bose Fields and Imaginary-Time Stochastic Differential Equations Thermal Properties of Interacting Bose Fields and Imaginary-Time Stochastic Differential Equations

1997-12-17

arxiv.org/abs/cond-mat/9712194v2

Europhys. Lett., v. 43, pp. 641-647 (1998)

Physics

Condensed Matter

Published version

Scientific paper

10.1209/epl/i1998-00411-9

Matsubara Green's functions for interacting bosons are expressed as classical statistical averages corresponding to a linear imaginary-time stochastic differential equation. This makes direct numerical simulations applicable to the study of equilibrium quantum properties of bosons in the non-perturbative regime. To verify our results we discuss an oscillator with quartic anharmonicity as a prototype model for an interacting Bose gas. An analytic expression for the characteristic function in a thermal state is derived and a Higgs-type phase transition discussed, which occurs when the oscillator frequency becomes negative.

Affiliated with

Also associated with

No associations

Rating

Thermal Properties of Interacting Bose Fields and Imaginary-Time Stochastic Differential Equations does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Thermal Properties of Interacting Bose Fields and Imaginary-Time Stochastic Differential Equations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermal Properties of Interacting Bose Fields and Imaginary-Time Stochastic Differential Equations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-677365