Please use this identifier to cite or link to this item: http://buratest.brunel.ac.uk/handle/2438/8912
Title: Surprising relations between parametric level correlations and fidelity decay
Authors: Kohler, H
Smolyarenko, IE
Pineda, C
Guhr, T
Leyvraz, F
Seligman, TH
Keywords: Parametric level correlations;Fidelity decay;Random matrix theory;Supersymmetry techniques
Issue Date: 2008
Publisher: American Physical Society
Citation: Physical Review Letters, 100: Article no. 190404, 2008
Abstract: Relations among fidelity, cross-form-factor (i.e., parametric level correlations), and level velocity correlations are found both by deriving a Ward identity in a two-matrix model and by comparing exact results, using supersymmetry techniques, in the framework of random matrix theory. A power law decay near Heisenberg time, as a function of the relevant parameter, is shown to be at the root of revivals recently discovered for fidelity decay. For cross-form-factors the revivals are illustrated by a numerical study of a multiply kicked Ising spin chain.
Description: Copyright © 2008 The American Physical Society.
URI: http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.100.190404
http://bura.brunel.ac.uk/handle/2438/8912
DOI: http://dx.doi.org/10.1103/PhysRevLett.100.190404
ISSN: 0031-9007
Appears in Collections:Dept of Mathematics Research Papers
Mathematical Sciences

Files in This Item:
File Description SizeFormat 
Fulltext.pdf241.03 kBAdobe PDFView/Open


Items in BURA are protected by copyright, with all rights reserved, unless otherwise indicated.