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Quantum stochastic equation for the low density limit

L. Accardi·A. N. Pechen·I. V. Volovich
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Abstract

A new derivation of quantum stochastic differential equation for the evolution operator in the low density limit is presented. We use the distribution approach and derive a new algebra for quadratic master fields in the low density limit by using the energy representation. We formulate the stochastic golden rule in the low density limit case for a system coupling with Bose field via quadratic interaction. In particular the vacuum expectation value of the evolution operator is computed and its exponential decay is shown.

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L. Accardi, A. N. Pechen, I. V. Volovich. 2002-06-20. Quantum stochastic equation for the low density limit. https://doi.org/10.1088/0305-4470%2F35%2F23%2F306

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