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Collisional thermalization of a particle ensemble under the energy dissipation can be seen in variety of systems, such as heated granular gasses and particles in plasmas. Despite its universal existence, analytical descriptions of the…

Plasma Physics · Physics 2021-11-08 Keisuke Fujii , Jun Imano , Arseniy Kuzmin , Taiichi Shikama , Masahiro Hasuo

We report an experimental study of the intermittent dynamics of a gas flowing through a column of a non-Newtonian fluid. In a given range of the imposed constant flow rate, the system spontaneously alternates between two regimes: bubbles…

Statistical Mechanics · Physics 2013-10-02 Thibaut Divoux , Eric Bertin , Valérie Vidal , Jean-Christophe Géminard

We employ a modified cascade hydrodynamics code to simulate the phase transition of an expanding quark-gluon plasma and the passage of a charmed particle through it. When inside the plasma droplets, the charmed quark experiences drag and…

High Energy Physics - Phenomenology · Physics 2009-10-28 Benjamin Svetitsky , Asher Uziel

In a dusty plasma, an impulsively generated shock, i.e., blast wave, was observed to decay less than would be expected due to gas friction alone. In the experiment, a single layer of microparticles was levitated in a radio-frequency…

Plasma Physics · Physics 2020-12-02 Anton Kananovich , J. Goree

The dissipative corrections to the hydrodynamic equations describing the evolution of energy-momentum tensor and parton densities are derived in a simple way using the scaling approximation for the expanding quark gluon plasma at finite…

High Energy Physics - Phenomenology · Physics 2011-07-19 D. Dutta , A. K. Mohanty , K. Kumar , R. K. Choudhury

We briefly recall the tremendous strides in the studies of the parton cascade model made by Klaus Geiger. Next, we argue that photons may provide confirmation of several of these ideas. Thus we know that, copious internetted partonic…

Nuclear Theory · Physics 2009-10-31 Dinesh Kumar Srivastava

We map the spectrum of $1\to 2$ parton splittings inside a medium characterized by a transport coefficient $\hat q$ onto the kinematical Lund plane, taking into account the finite formation time of the process. We discuss the distinct…

High Energy Physics - Phenomenology · Physics 2020-01-29 Fabio Dominguez , Jose Guilherme Milhano , Carlos A. Salgado , Konrad Tywoniuk , Victor Vila

We discuss dissipative processes in strongly gyrotropic, nearly collisionless plasma in clusters of galaxies (ICM). First, we point out that Braginsky theory, which assumes that collisions are more frequent that the system's dynamical time…

Astrophysics · Physics 2009-11-13 Maxim Lyutikov

Starting with the interpretation of parton evolution with rapidity as a branching-diffusion process, we describe the different kinds of fluctuations of the density of partons which affect the properties of QCD scattering amplitudes at…

High Energy Physics - Phenomenology · Physics 2014-09-16 A. H. Mueller , S. Munier

We revisit the problem of how energy transfer through the turbulent cascade operates in compressible hydrodynamic turbulence. In general, there is no conservative compressible cascade since the kinetic and internal energy reservoirs can…

Fluid Dynamics · Physics 2019-12-09 Wolfram Schmidt , Philipp Grete

Magnetic and kinetic energy in ideal incompressible MHD are not global invariants and, therefore, it had been justified to discuss only the cascade of their sum, total energy. We provide a physical argument based on scale-locality of the…

Solar and Stellar Astrophysics · Physics 2019-02-26 Xin Bian , Hussein Aluie

Quenching of gluonic jets and heavy quark production in Au+Au collisions at RHIC can be understood within the pQCD based 3+1 dimensional parton transport model BAMPS including pQCD bremsstrahlung $2 \leftrightarrow 3$ processes.…

High Energy Physics - Phenomenology · Physics 2022-03-02 I. Bouras , A. El , O. Fochler , F. Reining , J. Uphoff , C. Wesp , Z. Xu , C. Greiner

The energy cascade in turbulence, first statistically described by Richardson (1922) and Kolmogorov (1941), lacked connection to the underlying fluid dynamics. Recent numerical studies of Goto et al. (2017) and Yoneda et al. (2022) revealed…

Analysis of PDEs · Mathematics 2025-09-09 Afifah Maya Iknaningrum , Pen-Yuan Hsu , Tsuyoshi Yoneda , Hirofumi Notsu

Breaking waves entrain gas beneath the surface. The wave-breaking process energizes turbulent fluctuations that break bubbles in quick succession to generate a wide range of bubble sizes. Understanding this generation mechanism paves the…

Fluid Dynamics · Physics 2021-02-24 Wai Hong Ronald Chan , Perry Johnson , Parviz Moin

The phenomenon of branched flow, visualized as a chaotic arborescent pattern of propagating particles, waves, or rays, has been identified in disparate physical systems ranging from electrons to tsunamis, with periodic systems only recently…

Pattern Formation and Solitons · Physics 2025-01-10 Alexandre Wagemakers , Aleksi Hartikainen , Alvar Daza , Esa Räsänen , Miguel A. F. Sanjuán

We present a new model for jet quenching in a quark gluon plasma (QGP). The jet energy loss has two steps. The initial jet parton with a high virtuality loses energy by a perturbative vacuum parton shower modified by medium interactions…

High Energy Physics - Phenomenology · Physics 2025-02-27 Iurii Karpenko , Alexander Lind , Martin Rohrmoser , Joerg Aichelin , Pol-Bernard Gossiaux

Breaking waves generate a distribution of bubble sizes that evolves over time. Knowledge of how this distribution evolves is of practical importance for maritime and climate studies. The analytical framework developed in Part 1 examined how…

Fluid Dynamics · Physics 2020-12-10 Wai Hong Ronald Chan , Perry L. Johnson , Parviz Moin , Javier Urzay

Parton cascade is a microscopic transport approach for the study of the space-time evolution of the Quark-Gluon Plasma produced in relativistic heavy ion collisions and its experimental manifestations. In the following, parton cascade…

Nuclear Theory · Physics 2009-07-22 Bin Zhang

Despite its importance in both geophysical and industrial contexts, the inertial fragmentation of gas filaments has received much less attention than their liquid counterparts. Yet, gas filaments produce the smallest bubble sizes, which…

Fluid Dynamics · Physics 2025-08-05 Aliénor Rivière , Zehua Liu , Jishen Zhang , Laurent Duchemin , Luc Deike , Stéphane Perrard

Generalised two-dimensional (2D) fluid dynamics is characterised by a relationship between a scalar field $q$, called generalised vorticity, and the stream function $\psi$, namely $q = (-\nabla^2)^\frac{\alpha}{2} \psi$. We study the…

Fluid Dynamics · Physics 2025-04-16 Vibhuti Bhushan Jha , Kannabiran Seshasayanan , Vassilios Dallas