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A Numerical Study of Quantum Decoherence

Published online by Cambridge University Press:  20 August 2015

Riccardo Adami  and
Claudia Negulescu
Riccardo Adami*
Affiliation:
Dipartimento di Matematica e Applicazioni, Università di Milano Bicocca, via R. Cozzi, 53 20125 Milano, Italy
Claudia Negulescu*
Affiliation:
CMI/LATP (UMR 6632), Université de Provence, 39, rue Joliot Curie, 13453 Marseille Cedex 13, France
*
Email:riccardo.adami@unimib.it
Corresponding author.Email:Claudia.negulescu@math.univ-toulouse.fr
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Abstract

The present paper provides a numerical investigation of the decoherence effect induced on a quantum heavy particle by the scattering with a light one. The time dependent two-particle Schrödinger equation is solved by means of a time-splitting method. The damping undergone by the non-diagonal terms of the heavy particle density matrix is estimated numerically as well as the error in the Joos-Zeh approximation formula.

Keywords

35Q4035Q4165M0665Z0570F05Quantum mechanicsSchrödinger equationheavy-light particle scatteringinterferencedecoherencenumerical discretizationnumerical analysissplitting scheme

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Type
Research Article
Information
Communications in Computational Physics , Volume 12 , Issue 1 , July 2012 , pp. 85 - 108
Copyright
Copyright © Global Science Press Limited 2012

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