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Related papers: Non-boost-invariant anisotropic dynamics

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We investigate the far-from-equilibrium dynamics and transport properties of a relativistic massive gas obeying Maxwell-Boltzmann (MB), Bose-Einstein (BE), and Fermi-Dirac (FD) statistics undergoing a boost-invariant Bjorken expansion. We…

Nuclear Theory · Physics 2026-01-26 Krishanu Sengupta , Reghukrishnan Gangadharan , Victor Roy

We introduce an improved form for the anisotropic hydrodynamics distribution function which explicitly takes into account the free-streaming and equilibrating contributions separately. We demonstrate that with this improvement one can…

High Energy Physics - Phenomenology · Physics 2021-01-04 Huda Alalawi , Michael Strickland

Heavy quark (HQ) momentum ($\kappa$) and spatial diffusion ($D_s$) coefficients are computed in a non-perturbative thermal QCD medium in the presence of a background magnetic field of arbitrary strength. Both perturbative and…

High Energy Physics - Phenomenology · Physics 2026-04-28 Debarshi Dey , Aritra Bandyopadhyay , Yifeng Sun , Santosh K. Das

Weakly collisional plasmas dynamically develop pressure anisotropies with respect to the magnetic field. These anisotropies trigger plasma instabilities at scales just above the ion Larmor radius \rho_i and much below the mean free path…

High Energy Astrophysical Phenomena · Physics 2015-05-18 M. S. Rosin , A. A. Schekochihin , F. Rincon , S. C. Cowley

We solve second order relativistic hydrodynamics equations for a boost-invariant 1+1-dimensional expanding fluid with an equation of state taken from lattice calculations of the thermodynamics of strongly coupled quark-gluon plasma. We…

High Energy Physics - Phenomenology · Physics 2010-03-19 Krishna Rajagopal , Nilesh Tripuraneni

We study the production and the evolution of quark-gluon plasma expected to be formed in ultra relativistic heavy-ion collisions, within the color flux-tube model. We introduce the gluonic component in the Boltzmann equation, which we solve…

High Energy Physics - Phenomenology · Physics 2008-11-26 Gouranga C Nayak , V. Ravishankar

For the Bjorken flow we investigate the hydrodynamization of different modes of the one-particle distribution function by analyzing its relativistic kinetic equations. We calculate the constitutive relations of each mode written as a…

High Energy Physics - Theory · Physics 2019-09-23 Alireza Behtash , C. N. Cruz-Camacho , Syo Kamata , M. Martinez

State-of-the-art hydrodynamic models of heavy-ion collisions have considerable theoretical model uncertainties in the description of the very early pre-hydrodynamic stage. We add a new computational module, K$_\mathrm{T}$Iso, that describes…

Nuclear Theory · Physics 2022-07-13 Dananjaya Liyanage , Derek Everett , Chandrodoy Chattopadhyay , Ulrich Heinz

We study the dynamics of the chiral phase transition expected during the expansion of the quark-gluon plasma produced in a high energy hadron or heavy ion collision, using the $O(4)$ linear sigma model in the mean field approximation.…

High Energy Physics - Phenomenology · Physics 2016-09-01 Y. Kluger , F. Cooper , E. Mottola , J. P. Paz , A. Kovner

Using a perturbative approach, an evolution equation for the space charge density, correct up to the third order, is deduced for arbitrary initial density profiles of the electron and ion fluids in a cold nonrelativistic plasma. The…

Plasma Physics · Physics 2024-10-10 Subhasish Bag , Vikrant Saxena

In the article correct method for the kinetic Boltzmann equation asymptotic solution is formulated, the Hilbert's and Enskog's methods are discussed. The equations system of multicomponent non-equilibrium gas dynamics is derived, that…

Fluid Dynamics · Physics 2013-03-27 S. A. Serov , S. S. Serova

We calculate rapidity distribution of photons due to Compton and annihilation processes from {\em Quark Gluon Plasma} (QGP) with pre-equilibrium momentum-space anisotropy. We also include contributions from hadronic matter with late stage…

High Energy Physics - Phenomenology · Physics 2014-11-20 Lusaka Bhattacharya , Pradip Roy

In 1959 Weibel demonstrated that when a QED plasma has a temperature anisotropy there exist unstable transverse magnetic excitations which grow exponentially fast. In this paper we will review how to determine the growth rates for these…

High Energy Physics - Phenomenology · Physics 2017-08-23 Paul Romatschke , Michael Strickland

The hydrodynamic expansion of quark-gluon plasmas with spherical and longitudinally boost-invariant geometries is studied as a function of the initial energy density. The sensitivity of the collective flow pattern to uncertainties in the…

Nuclear Theory · Physics 2009-10-09 Dirk H. Rischke , Miklos Gyulassy

By solving a simple kinetic equation, in the relaxation time approximation, and for a particular set of moments of the distribution function, we establish a set of equations which, on the one hand, capture exactly the dynamics of the…

Nuclear Theory · Physics 2018-03-07 Jean-Paul Blaizot , Li Yan

We study the long-time behavior of a non-interacting two-dimensional quantum gas in a weak random potential with long-range correlations. Any peaked initial momentum distribution will eventually become isotropic and broaden due to…

Quantum Physics · Physics 2025-12-24 Vili Heinonen , Jani Lukkarinen

We study the isotropization of a homogeneous, strongly coupled, non-Abelian plasma by means of its gravity dual. We compare the time evolution of a large number of initially anisotropic states as determined, on the one hand, by the full…

High Energy Physics - Theory · Physics 2012-05-22 Michal P. Heller , David Mateos , Wilke van der Schee , Diego Trancanelli

The only way to obtain the space-time structure of heavy ion collision is through the study of two-particle momentum correlations. Thus we have studied the intensity correlation for the photons having fixed transverse momentum of one of the…

Nuclear Theory · Physics 2014-07-17 Payal Mohanty , Mahatsab Mandal , Pradip K Roy

Jets and photons could play an important role in finding the transport coefficients of the quark-gluon plasma. To this end we analyze their interaction with a non-equilibrium quark-gluon plasma. Using new field-theoretical tools we derive…

High Energy Physics - Phenomenology · Physics 2021-02-03 Sigtryggur Hauksson , Sangyong Jeon , Charles Gale

We establish the existence of a far-from-equilibrium attractor in weakly-coupled gauge theory undergoing one-dimensional Bjorken expansion. We demonstrate that the resulting far-from-equilibrium evolution is insensitive to certain features…

High Energy Physics - Phenomenology · Physics 2020-09-23 Dekrayat Almaalol , Aleksi Kurkela , Michael Strickland