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A formalism for the evaluation of the intensity of photon and gluon bremsstrahlung in QED and QCD condensed media is presented which considers general interactions beyond the Fokker-Planck/Gaussian approximation, the angular distribution of…

高能物理 - 唯象学 · 物理学 2019-03-19 Xabier Feal

We investigate the behaviour of the lowest nonhydrodynamic modes in a class of holographic models which exhibit an equation of state closely mimicking the one determined from lattice QCD. We calculate the lowest quasinormal mode frequencies…

高能物理 - 理论 · 物理学 2015-07-01 Romuald A. Janik , Grzegorz Plewa , Hesam Soltanpanahi , Michal Spalinski

We develop a spectrally accurate numerical method to compute solutions of a model partial differential equation used in plasma physics to describe diffusion in velocity space due to Fokker-Planck collisions. The solution is represented as a…

经典分析与常微分方程 · 数学 2015-03-18 Jon Wilkening , Antoine Cerfon

We study the spectral properties of a highly occupied non-Abelian non-equilibrium plasma appearing ubiquitously in weak coupling descriptions of QCD matter. The spectral function of this far-from-equilibrium plasma is measured by employing…

高能物理 - 唯象学 · 物理学 2018-11-30 K. Boguslavski , A. Kurkela , T. Lappi , J. Peuron

In this paper we proceed with investigation of connections between Fokker - Planck equation and continuum mechanics. In spectral decomposition of Fokker - Planck equation solution we preserve only terms with the smallest degree of damping.…

混沌动力学 · 物理学 2007-09-17 Igor A. Tanski

We present a high order perturbation approach to quantitatively calculate spectral densities in three distinct steps starting from the model Hamiltonian and the observables of interest. The approach is based on the perturbative continuous…

强关联电子 · 物理学 2009-11-10 Christian Knetter , Kai P. Schmidt , Götz S. Uhrig

A thermodynamic T-matrix approach for elastic 2-body interactions is employed to calculate spectral functions of open and hidden heavy-quark systems in the Quark-Gluon Plasma. This enables the evaluation of quarkonium bound-state properties…

高能物理 - 唯象学 · 物理学 2014-11-21 F. Riek , R. Rapp

Results on initial transverse energy production based on NLO perturbative QCD calculation with final state saturation of produced minijets are used to fix the initial energy density of produced matter. Assuming rapid thermalization, this…

核理论 · 物理学 2009-11-07 P. V. Ruuskanen

Consistent descriptions of the equation of states, and information about transport coefficients of deuterium-tritium mixture are demonstrated through quantum molecular dynamic (QMD) simulations (up to a density of 600 g/cm$^{3}$ and a…

材料科学 · 物理学 2015-06-04 Cong Wang , Yao Long , Xian-Tu He , Ping Zhang

We investigate the properties of quantum electrodynamics $(QED_3)$ in two spatial dimensions at finite temperature and density. The static as well as the dynamical properties of the planar plasma are calculated using the real time formalism…

高能物理 - 唯象学 · 物理学 2009-10-28 Martin Klein-Kreisler , Manuel Torres

By making use of the finite-temperature real-time static potential that was introduced and computed to leading non-trivial order in Hard Thermal Loop resummed perturbation theory in recent work, and solving numerically a Schr\"odinger-type…

高能物理 - 唯象学 · 物理学 2009-11-13 M. Laine

In this report we summarize a recent progress in exploration of correlated two-dimensional electron states in partially filled high Landau levels. At a mean-field Hartree-Fock level they can be described as charge-density waves, either…

介观与纳米尺度物理 · 物理学 2009-11-07 Michael M. Fogler

The quark and gluon viscosities are calculated in quark-gluon plasmas to leading orders in the coupling constant by including screening. For weakly interaction QCD and QED plasmas dynamical screening of transverse interactions and Debye…

高能物理 - 唯象学 · 物理学 2009-10-28 H. Heiselberg

Cosmic ray (CR) protons are an important component in many astrophysical systems. Processes like CR injection, cooling, adiabatic changes as well as active CR transport through the medium strongly modify the CR momentum distribution and…

高能天体物理现象 · 物理学 2019-11-20 Philipp Girichidis , Christoph Pfrommer , Michal Hanasz , Thorsten Naab

High-energy particles stream during coronal mass ejections or flares through the plasma of the solar wind. This causes instabilities, which lead to wave growth at specific resonant wave numbers, especially within shock regions. These…

太阳与恒星天体物理 · 物理学 2013-04-01 Sebastian Lange , Felix Spanier , Markus Battarbee , Rami Vainio , Timo Laitinen

We study pseudospectra of quasinormal frequencies and complex linear momenta of a U(1) gauge field in a Schwarzschild black branes in Anti-de Sitter. We present a novel approach for computing the pseudospectra which uses directly the gauge…

高能物理 - 理论 · 物理学 2026-02-04 David Garcia-Fariña , Karl Landsteiner , Pau G. Romeu , Pablo Saura-Bastida

The frequency dependent conductivity $\sigma(\omega)$ of the strongly coupled Quark-Gluon Plasma (QGP) is estimated using a bottom up holographic model that can adequately describe recent lattice data for QCD thermodynamics at zero chemical…

高能物理 - 理论 · 物理学 2014-05-28 Stefano I. Finazzo , Jorge Noronha

The Coulomb log (log {\Lambda}) approximation is widely used to approximate electron transport coefficients in dense plasmas. It is a classical approximation to the momentum transport cross section. The accuracy of this approximation for…

等离子体物理 · 物理学 2018-10-17 Charles Starrett

We propose a novel quasiparticle interpretation of the equation of state of deconfined QCD at finite temperature. Using appropriate thermal masses, we introduce a phenomenological parametrization of the onset of confinement in the vicinity…

高能物理 - 唯象学 · 物理学 2009-11-07 R. A. Schneider , W. Weise

We derive hydrodynamic-like equations that are applicable to short-time scale color phenomena in the quark-gluon plasma. The equations are solved in the linear response approximation, and the gluon polarization tensor is derived. As an…

高能物理 - 唯象学 · 物理学 2009-11-11 Cristina Manuel , Stanislaw Mrowczynski