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dc.contributor.authorLing, B.
dc.contributor.authorSpringer, T.
dc.contributor.authorStephanov, M.
dc.date.accessioned2016-01-27T16:32:55Z
dc.date.available2016-01-27T16:32:55Z
dc.date.issued2014-06-06
dc.identifier.bibliographicCitationLing, B., Springer, T. and Stephanov, M. Hydrodynamics of charge fluctuations and balance functions. Physical Review C. 2014. 89(6). DOI: 10.1103/PhysRevC.89.064901.en_US
dc.identifier.issn0556-2813
dc.identifier.urihttp://hdl.handle.net/10027/20048
dc.descriptionThis is a copy of an article published in the Physical Review C © 2014 American Physical Society Publications.en_US
dc.description.abstractWe apply stochastic hydrodynamics to the study of charge-density fluctuations in QCD matter undergoing Bjorken expansion. We find that the charge-density correlations are given by a time integral over the history of the system, with the dominant contribution coming from the QCD crossover region where the change of susceptibility per entropy, χT /s, is most significant. We study the rapidity and azimuthal angle dependence of the resulting charge balance function using a simple analytic model of heavy-ion collision evolution. Our results are in agreement with experimental measurements, indicating that hydrodynamic fluctuations contribute significantly to the measured charge correlations in high-energy heavy-ion collisions. The sensitivity of the balance function to the value of the charge diffusion coefficient D allows us to estimate the typical value of this coefficient in the crossover region to be rather small, of the order of (2πT ) −1, characteristic of a strongly coupled plasmaen_US
dc.description.sponsorshipThis work is supported by the U.S. Department of Energy under Grant No. DE-FG0201ER41195.en_US
dc.publisherAmerican Physical Societyen_US
dc.subjectNoneen_US
dc.titleHydrodynamics of charge fluctuations and balance functionsen_US
dc.typeArticleen_US


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