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Coupling hydrodynamics to nonequilibrium degrees of freedom in strongly interacting quark-gluon plasma
Relativistic hydrodynamics simulations of quark-gluon plasma play a pivotal role in our understanding of heavy ion collisions at RHIC and LHC. They are based on a phenomenological description due to Müller, Israel, Stewart (MIS) and others, which incorporates viscous effects and ensures a well-posed initial value problem. Focusing on the case of conformal plasma we propose a generalization which includes, in addition, the dynamics of the least damped far-from-equilibrium degree of freedom found in strongly coupled plasmas through the AdS/CFT correspondence. We formulate new evolution equations for general flows and then test them in the case of N=4 super Yang-Mills plasma by comparing their solutions alongside solutions of MIS theory with numerical computations of isotropization and boost-invariant flow based on holography. In these tests the new equations reproduce the results of MIS theory when initialized close to the hydrodynamic stage of evolution, but give a more accurate description of the dynamics when initial conditions are set in the preequilibrium regime.
dc.abstract.en | Relativistic hydrodynamics simulations of quark-gluon plasma play a pivotal role in our understanding of heavy ion collisions at RHIC and LHC. They are based on a phenomenological description due to Müller, Israel, Stewart (MIS) and others, which incorporates viscous effects and ensures a well-posed initial value problem. Focusing on the case of conformal plasma we propose a generalization which includes, in addition, the dynamics of the least damped far-from-equilibrium degree of freedom found in strongly coupled plasmas through the AdS/CFT correspondence. We formulate new evolution equations for general flows and then test them in the case of N=4 super Yang-Mills plasma by comparing their solutions alongside solutions of MIS theory with numerical computations of isotropization and boost-invariant flow based on holography. In these tests the new equations reproduce the results of MIS theory when initialized close to the hydrodynamic stage of evolution, but give a more accurate description of the dynamics when initial conditions are set in the preequilibrium regime. | pl |
dc.affiliation | Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiego | pl |
dc.affiliation | Wydział Fizyki, Astronomii i Informatyki Stosowanej : Zakład Technologii Gier | pl |
dc.contributor.author | Heller, Michal P. | pl |
dc.contributor.author | Janik, Romuald - 100502 | pl |
dc.contributor.author | Spaliński, Michał | pl |
dc.contributor.author | Witaszczyk, Przemysław - 173687 | pl |
dc.date.accessioned | 2015-03-13T14:52:44Z | |
dc.date.available | 2015-03-13T14:52:44Z | |
dc.date.issued | 2014 | pl |
dc.description.number | 26 | pl |
dc.description.volume | 113 | pl |
dc.identifier.articleid | 261601 | pl |
dc.identifier.doi | 10.1103/PhysRevLett.113.261601 | pl |
dc.identifier.eissn | 1079-7114 | pl |
dc.identifier.eissn | 1092-0145 | pl |
dc.identifier.issn | 0031-9007 | pl |
dc.identifier.uri | http://ruj.uj.edu.pl/xmlui/handle/item/3817 | |
dc.language | eng | pl |
dc.language.container | eng | pl |
dc.rights | Dodaję tylko opis bibliograficzny | * |
dc.rights.licence | Bez licencji otwartego dostępu | |
dc.rights.uri | * | |
dc.subtype | Article | pl |
dc.title | Coupling hydrodynamics to nonequilibrium degrees of freedom in strongly interacting quark-gluon plasma | pl |
dc.title.journal | Physical Review Letters | pl |
dc.type | JournalArticle | pl |
dspace.entity.type | Publication |