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Title: Slowing out of equilibrium near the QCD critical point

Abstract

The QCD phase diagram may feature a critical end point at a temperature T and baryon chemical potential {mu} which is accessible in heavy-ion collisions. The universal long wavelength fluctuations which develop near this Ising critical point result in experimental signatures which can be used to find the critical point. The magnitude of the observed effects depends on how large the correlation length {xi} becomes. Because the matter created in a heavy-ion collision cools through the critical region of the phase diagram in a finite time, critical slowing down limits the growth of {xi}, preventing it from staying in equilibrium. This is the fundamental nonequilibrium effect which must be calculated in order to make quantitative predictions for experiment. We use universal nonequilibrium dynamics and phenomenologically motivated values for the necessary nonuniversal quantities to estimate how much the growth of {xi} is slowed. (c) 2000 The American Physical Society.

Authors:
 [1];  [1]
  1. Center for Theoretical Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)
Publication Date:
OSTI Identifier:
20216450
Resource Type:
Journal Article
Journal Name:
Physical Review. D, Particles Fields
Additional Journal Information:
Journal Volume: 61; Journal Issue: 10; Other Information: PBD: 15 May 2000; Journal ID: ISSN 0556-2821
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; QUANTUM CHROMODYNAMICS; HEAVY ION REACTIONS; PHASE DIAGRAMS; PHASE TRANSFORMATIONS; ISING MODEL; THEORETICAL DATA

Citation Formats

Berdnikov, Boris, and Rajagopal, Krishna. Slowing out of equilibrium near the QCD critical point. United States: N. p., 2000. Web. doi:10.1103/PhysRevD.61.105017.
Berdnikov, Boris, & Rajagopal, Krishna. Slowing out of equilibrium near the QCD critical point. United States. doi:10.1103/PhysRevD.61.105017.
Berdnikov, Boris, and Rajagopal, Krishna. Mon . "Slowing out of equilibrium near the QCD critical point". United States. doi:10.1103/PhysRevD.61.105017.
@article{osti_20216450,
title = {Slowing out of equilibrium near the QCD critical point},
author = {Berdnikov, Boris and Rajagopal, Krishna},
abstractNote = {The QCD phase diagram may feature a critical end point at a temperature T and baryon chemical potential {mu} which is accessible in heavy-ion collisions. The universal long wavelength fluctuations which develop near this Ising critical point result in experimental signatures which can be used to find the critical point. The magnitude of the observed effects depends on how large the correlation length {xi} becomes. Because the matter created in a heavy-ion collision cools through the critical region of the phase diagram in a finite time, critical slowing down limits the growth of {xi}, preventing it from staying in equilibrium. This is the fundamental nonequilibrium effect which must be calculated in order to make quantitative predictions for experiment. We use universal nonequilibrium dynamics and phenomenologically motivated values for the necessary nonuniversal quantities to estimate how much the growth of {xi} is slowed. (c) 2000 The American Physical Society.},
doi = {10.1103/PhysRevD.61.105017},
journal = {Physical Review. D, Particles Fields},
issn = {0556-2821},
number = 10,
volume = 61,
place = {United States},
year = {2000},
month = {5}
}