Quantum stochastic equation for the low density limit
Quantum Physics
2007-05-23 v2 Mathematical Physics
math.MP
Quantum Algebra
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.
Keywords
Cite
@article{arxiv.quant-ph/0108112,
title = {Quantum stochastic equation for the low density limit},
author = {L. Accardi and A. N. Pechen and I. V. Volovich},
journal= {arXiv preprint arXiv:quant-ph/0108112},
year = {2007}
}
Comments
Replaced with version published in J. Phys. A. References are added