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Title: Correlations far from equilibrium in charged strongly coupled fluids subjected to a strong magnetic field

Abstract

Within a holographic model, we calculate the time evolution of 2-point and 1-point correlation functions (of selected operators) within a charged strongly coupled system of many particles. That system is thermalizing from an anisotropic initial charged state far from equilibrium towards equilibrium while subjected to a constant external magnetic field. One main result is that thermalization times for 2-point functions are significantly (approximately three times) larger than those of 1-point functions. Magnetic field and charge amplify this difference, generally increasing thermalization times. However, there is also a competition of scales between charge density, magnetic field, and initial anisotropy, which leads to an array of qualitative changes on the 2- and 1-point functions. There appears to be a strong effect of the medium on 2-point functions at early times, but approximately none at later times. At strong magnetic fields, an apparently universal thermalization time emerges, at which all 2-point functions appear to thermalize regardless of any other scale in the system. Hence, this time scale is referred to as saturation time scale. As extremality is approached in the purely charged case, 2- and 1-point functions appear to equilibrate at infinitely late time. We also compute 2-point functions of charged operators. Ourmore » results can be taken to model thermalization in heavy ion collisions, or thermalization in selected condensed matter systems.« less

Authors:
 [1]; ORCiD logo [1]
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  1. Univ. of Alabama, Tuscaloosa, AL (United States)
Publication Date:
Research Org.:
Univ. of Alabama, Tuscaloosa, AL (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1611808
Grant/Contract Number:  
SC0012447
Resource Type:
Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2019; Journal Issue: 9; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Physics; AdS-CFT Correspondence; Holography and condensed matter physics (AdS/CMT); Holography and quark-gluon plasmas; Quark-Gluon Plasma

Citation Formats

Cartwright, Casey, and Kaminski, Matthias. Correlations far from equilibrium in charged strongly coupled fluids subjected to a strong magnetic field. United States: N. p., 2019. Web. https://doi.org/10.1007/jhep09(2019)072.
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Cartwright, Casey, & Kaminski, Matthias. Correlations far from equilibrium in charged strongly coupled fluids subjected to a strong magnetic field. United States. https://doi.org/10.1007/jhep09(2019)072
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Cartwright, Casey, and Kaminski, Matthias. Tue . "Correlations far from equilibrium in charged strongly coupled fluids subjected to a strong magnetic field". United States. https://doi.org/10.1007/jhep09(2019)072. https://www.osti.gov/servlets/purl/1611808.
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@article{osti_1611808,
title = {Correlations far from equilibrium in charged strongly coupled fluids subjected to a strong magnetic field},
author = {Cartwright, Casey and Kaminski, Matthias},
abstractNote = {Within a holographic model, we calculate the time evolution of 2-point and 1-point correlation functions (of selected operators) within a charged strongly coupled system of many particles. That system is thermalizing from an anisotropic initial charged state far from equilibrium towards equilibrium while subjected to a constant external magnetic field. One main result is that thermalization times for 2-point functions are significantly (approximately three times) larger than those of 1-point functions. Magnetic field and charge amplify this difference, generally increasing thermalization times. However, there is also a competition of scales between charge density, magnetic field, and initial anisotropy, which leads to an array of qualitative changes on the 2- and 1-point functions. There appears to be a strong effect of the medium on 2-point functions at early times, but approximately none at later times. At strong magnetic fields, an apparently universal thermalization time emerges, at which all 2-point functions appear to thermalize regardless of any other scale in the system. Hence, this time scale is referred to as saturation time scale. As extremality is approached in the purely charged case, 2- and 1-point functions appear to equilibrate at infinitely late time. We also compute 2-point functions of charged operators. Our results can be taken to model thermalization in heavy ion collisions, or thermalization in selected condensed matter systems.},
doi = {10.1007/jhep09(2019)072},
journal = {Journal of High Energy Physics (Online)},
number = 9,
volume = 2019,
place = {United States},
year = {2019},
month = {9}
}
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https://doi.org/10.1007/jhep09(2019)072
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