6533b859fe1ef96bd12b78c1

RESEARCH PRODUCT

The stochastic limit in the analysis of the open BCS model

Fabio Bagarello

subject

Spin systemFOS: Physical sciencesGeneral Physics and AstronomyStatistical and Nonlinear PhysicsBCS modelMathematical Physics (math-ph)FermionCritical valuefermionic operatorsLimit (mathematics)Statistical physicsSettore MAT/07 - Fisica MatematicaMathematical PhysicsMathematics

description

In this paper we show how the perturbative procedure known as {\em stochastic limit} may be useful in the analysis of the Open BCS model discussed by Buffet and Martin as a spin system interacting with a fermionic reservoir. In particular we show how the same values of the critical temperature and of the order parameters can be found with a significantly simpler approach.

yearjournalcountryeditionlanguage
2004-02-04
10.1088/0305-4470/37/7/002http://arxiv.org/abs/0904.0195