Causal diffusion and the survival of charge fluctuations in nuclear collisions

Mohamed Abdel Aziz and Sean Gavin
Phys. Rev. C 70, 034905 – Published 28 September 2004

Abstract

Diffusion may obliterate fluctuation signals of the QCD phase transition in nuclear collisions at SPS and RHIC energies. We propose a hyperbolic diffusion equation to study the dissipation of net charge fluctuations. This equation is needed in a relativistic context, because the classic parabolic diffusion equation violates causality. We find that causality substantially limits the extent to which diffusion can dissipate these fluctuations.

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  • Received 22 April 2004

DOI:https://doi.org/10.1103/PhysRevC.70.034905

©2004 American Physical Society

Authors & Affiliations

Mohamed Abdel Aziz and Sean Gavin

  • Physics and Astronomy Department, Wayne State University, 666 W Hancock, Detroit, Michigan 48201, USA

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Issue

Vol. 70, Iss. 3 — September 2004

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