Functional integrals for many-boson systems

A. Casher; D. Lurié; M. Revzen

doi:10.1063/1.1664716

Functional integrals for many-boson systems

A. Casher, D. Lurié, M. Revzen

Research output: Contribution to journal › Article › peer-review

Abstract

We express the grand canonical partition function (GCPF) for a system of interacting bosons as a functional integral over one complex function. Our derivation is based on the so-called coherent-state representation [R. J. Glauber, Phys. Rev. 136, 2766 (1963)]. We show how to extract the perturbative expansion of the GCPF and the various Green's functions from our functional-integral representation and we indicate the relevance of our formalism to the theory of superfluidity.

Original language	English
Pages (from-to)	1312-1318
Number of pages	7
Journal	Journal of Mathematical Physics
Volume	9
Issue number	8
DOIs	https://doi.org/10.1063/1.1664716
State	Published - 1968
Externally published	Yes

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Functional integrals for many-boson systems

Abstract

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