Quasilinear transport approach to equilibration of quark-gluon plasmas

Mrówczyński, Stanisław; Müller, Berndt

doi:10.1103/physrevd.81.065021

Cited by 5 publications

(3 citation statements)

References 48 publications

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“…(11). 1 As an aside, and since τrr = 0, one has τrrτrr = ( τrrτrr − τrr τrr ). Therefore one can equally talk of ∆τrr if any conceptual advantage could be obtained.…”

Section: Separation Of the Stochastic Stress-energy Contribution T IImentioning

confidence: 99%

“…A relatively broad consensus arose in the last years around the nature of the medium created in heavy ion collisions when it has become established (to the surprise of many) that the medium created at energy densities beyond the phase transition to a quark-gluon medium is best characterized as a strongly interacting fluid. This fluid features a very low shear viscosity over entropy density η/s ≃ 0.1, that is, a liquid close to perfect where neighbooring fluid elements strongly couple (although some alternative possibilities such as plasma instabilities could still allow for a weakly coupled medium [1]). This apparent low viscosity has been confirmed recently at the LHC [2].…”

Section: Introductionmentioning

confidence: 99%

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Bulk viscosity and energy-momentum correlations in high energy hadron collisions

2012

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We show how the measurement of appropriately constructed particle-energy/momentum correlations allows access to the bulk viscosity of strongly interacting hadron matter in heavy ion collisions. This measurement can be performed by the LHC and RHIC experiments in events with high-particle multiplicity, following up on existing estimates of the shear viscosity based on elliptic flow.PACS. 13.85.Ni Inclusive production with identified hadrons -25.75.Gz Particle correlations and fluctuations

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“…(11). 1 As an aside, and since τrr = 0, one has τrrτrr = ( τrrτrr − τrr τrr ). Therefore one can equally talk of ∆τrr if any conceptual advantage could be obtained.…”

Section: Separation Of the Stochastic Stress-energy Contribution T IImentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Bulk viscosity and energy-momentum correlations in high energy hadron collisions

2012

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“…As a result, obtaining a detailed understanding of the chromo-Weibel instability's effect on the isotropization and thermalization of the matter created in ultrarelativistic heavy ion collisions is of upmost importance. There have been many works that have addressed pieces of the puzzle [47,61,[72][73][74][75]. Recently there has been a highly impressive effort to parametrically estimate the effect of plasma instabilities on the quark gluon plasma thermalization time [76,77]; however, being a parametric estimate it does not yet fully answer the question or lend itself to extrapolations to realistic couplings.…”

Section: Introductionmentioning

confidence: 99%

Instabilities of an anisotropically expanding non-Abelian plasma:3D+3Vdiscretized hard-loop simulations

2013

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We study the (3+1)-dimensional evolution of non-Abelian plasma instabilities in the presence of a longitudinally expanding background of hard particles using the discretized hard loop framework. The free streaming background dynamically generates a momentum-space anisotropic distribution which is unstable to the rapid growth of chromomagnetic and chromoelectric fields. These fields produce longitudinal pressure that works to isotropize the system. Extrapolating our results to energies probed in ultrarelativistic heavy-ion collisions we find, however, that a pressure anisotropy persists for a few fm/c. In addition, on time scales relevant to heavy-ion collisions we observe continued growth of plasma instabilities in the strongly non-Abelian regime. Finally, we find that the longitudinal energy spectrum is well-described by a Boltzmann distribution with increasing temperature at intermediate time scales.

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Entanglement of scales as a possible mechanism for decoherence and thermalization in relativistic heavy ion collisions

Akkelin

Sinyukov

2014

Phys. Rev. C

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Despite the fact that a system created in relativistic heavy ion collisions is an isolated quantum system, which cannot increase its entropy in the course of unitary quantum evolution, hydrodynamical analysis of experimental data seems to indicate that the matter formed in the collisions is thermalized very quickly. Based on common consideration of hydrodynamics as an effective theory in the domain of slow-and long-length modes, we discuss the physical mechanisms responsible for the decoherence and emergence of the hydrodynamic behavior in such collisions, and demonstrate how such physical mechanisms work in the case of the scalar field model. We obtain the evolution equation for the Wigner function of a long-wavelength subsystem that describes its decoherence, isotropization, and approach to thermal equilibrium induced by interaction with short-wavelength modes. Our analysis supports the idea that decoherence, quantum-to-classical transition and thermalization in isolated quantum systems are attributed to the experimental context, and are related to a particular procedure of decomposition of the whole quantum system into relevant and irrelevant from an observational viewpoint subsystems.

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Quasilinear transport approach to equilibration of quark-gluon plasmas

Cited by 5 publications

References 48 publications

Bulk viscosity and energy-momentum correlations in high energy hadron collisions

Bulk viscosity and energy-momentum correlations in high energy hadron collisions

Instabilities of an anisotropically expanding non-Abelian plasma:3D+3Vdiscretized hard-loop simulations

Entanglement of scales as a possible mechanism for decoherence and thermalization in relativistic heavy ion collisions

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