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Title: Baryon number diffusion with critical fluctuations

Abstract

The description of dynamical fluctuations near the QCD critical point in heavy-ion collisions is crucial for understanding the existing and upcoming experimental data from the beam energy scan programs. In this talk we discuss the evolution of fluctuations of the net-baryon density as given by a stochastic diffusion equation. In conclusion we study equilibrium as well as dynamical systems for which we can show the impact of nonequilibrium effects on the second-order moment.

Authors:
 [1];  [2];  [3];  [4]
  1. SUBATECH UMR 6457 (IMT Atlantique, Univ. de Nantes, IN2P3/CNRS), Nantes (France)
  2. Univ. of Wroclaw, Wroclaw (Poland)
  3. North Carolina State Univ., Raleigh, NC (United States)
  4. Duke Univ., Durham, NC (United States)
Publication Date:
Research Org.:
North Carolina State Univ., Raleigh, NC (United States); Duke Univ., Durham, NC (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1502400
Grant/Contract Number:  
[FG02-03ER41260; FG02-05ER41367]
Resource Type:
Accepted Manuscript
Journal Name:
Nuclear Physics. A
Additional Journal Information:
[ Journal Volume: 967; Journal Issue: C]; Journal ID: ISSN 0375-9474
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; QCD phase diagram; QCD critical point; critical fluctuations; stochastic baryon number diffusion; real-time dynamics

Citation Formats

Nahrgang, Marlene, Bluhm, Marcus, Schafer, Thomas, and Bass, Steffen A. Baryon number diffusion with critical fluctuations. United States: N. p., 2017. Web. doi:10.1016/j.nuclphysa.2017.04.021.
Nahrgang, Marlene, Bluhm, Marcus, Schafer, Thomas, & Bass, Steffen A. Baryon number diffusion with critical fluctuations. United States. doi:10.1016/j.nuclphysa.2017.04.021.
Nahrgang, Marlene, Bluhm, Marcus, Schafer, Thomas, and Bass, Steffen A. Mon . "Baryon number diffusion with critical fluctuations". United States. doi:10.1016/j.nuclphysa.2017.04.021. https://www.osti.gov/servlets/purl/1502400.
@article{osti_1502400,
title = {Baryon number diffusion with critical fluctuations},
author = {Nahrgang, Marlene and Bluhm, Marcus and Schafer, Thomas and Bass, Steffen A.},
abstractNote = {The description of dynamical fluctuations near the QCD critical point in heavy-ion collisions is crucial for understanding the existing and upcoming experimental data from the beam energy scan programs. In this talk we discuss the evolution of fluctuations of the net-baryon density as given by a stochastic diffusion equation. In conclusion we study equilibrium as well as dynamical systems for which we can show the impact of nonequilibrium effects on the second-order moment.},
doi = {10.1016/j.nuclphysa.2017.04.021},
journal = {Nuclear Physics. A},
number = [C],
volume = [967],
place = {United States},
year = {2017},
month = {9}
}

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Figures / Tables:

Fig. 1. Fig. 1. : Left: Temperature dependence of ξ and $m$2 considered in this study, $T$c = 0.15 GeV and ξ0 = 0.479 fm. Right: Static structure factor $S$$k$ as a function of momentum $k$ for $T$ = $T$$c$ and $T$ = 0.5 GeV for different Δx (L = 10 fmmore » and $N$x = 64, 128, 256, 512). The fluctuations seen at small $k$ are of statistical origin.« less

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