Decoherence, wave function collapses and non-ordinary statistical mechanics

Bologna, M; Grigolini, P; Pala, MG; Palatella, L

Abstract

We consider a toy model of pointer interacting with a 1/2-spin system, whose sigma(lambda) variable is measured by the environment, according to the prescription of decoherence theory. If the environment measuring the variable sigma(lambda), yields ordinary statistical mechanics, the pointer sensitive to the 1/2-spin system undergoes the same. exponential. decoherence regardless of whether real collapses or an entanglement with the environment, mimicking the effect of real collapses. occur. In the case of non-ordinary statistical mechanics the occurrence of real collapses make the pointer still relax exponentially in time, while the equivalent picture in terms of reduced density matrix generates an inverse power law decoherence. (C) 2003 Elsevier Science Ltd. All rights reserved.

Más información

Título según WOS: ID WOS:000182310600001 Not found in local WOS DB
Título de la Revista: CHAOS SOLITONS & FRACTALS
Volumen: 17
Número: 4
Editorial: PERGAMON-ELSEVIER SCIENCE LTD
Fecha de publicación: 2003
Página de inicio: 601
Página final: 608
DOI:

10.1016/S0960-0779(02)00491-5

Notas: ISI