- 00-91 A. Abdesselam, J. Magnen, V. Rivasseau
- Bosonic Monocluster Expansion
(98K, Latex 2e with 1 eps figure)
Feb 28, 00
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Abstract. We compute connected Green's functions of a Bosonic field theory
with cutoffs by means of a ``minimal'' expansion which
in a single move, interpolating a generalized propagator,
performs the usual tasks of the cluster and Mayer expansion.
In this way it allows a direct construction of the infinite volume
or thermodynamic limit and it brings constructive Bosonic expansions
closer to constructive Fermionic expansions and to perturbation theory.