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The existing predictions of the energy density of gravitational waves produced during preheating mostly rely on computer simulations in which the matter field inhomogeneities essentially behave classically. In this article we follow instead…

Cosmology and Nongalactic Astrophysics · Physics 2020-02-25 C. Armendariz-Picon

The electrodynamical formulae for the transition radiation are applied to the case of partons crossing the surface of the deconfined region in heavy ion collisions. The chromopermittivity is used in place of the dielectric permittivity. The…

High Energy Physics - Phenomenology · Physics 2010-03-11 I. M. Dremin

We revisit the picture of jets propagating in the quark-gluon plasma. In addition to vacuum radiation, partons scatter on the medium constituents resulting in induced emissions. Analytical approaches to including these interactions have…

High Energy Physics - Phenomenology · Physics 2023-02-28 Johannes Hamre Isaksen , Adam Takacs , Konrad Tywoniuk

The Low's theorem is applied to the soft gluon emission from heavy quark scattering in quark-gluon plasma (QGP). The QGP is described by the dynamical quasi-particle model (DQPM) which reproduces the EoS from lQCD at finite temperature and…

High Energy Physics - Phenomenology · Physics 2023-07-19 Taesoo Song , Ilia Grishmanovskii , Olga Soloveva , Elena Bratkovskaya

The effect of detailed balance in induced gluon radiation for an energetic parton propagating inside a quark-gluon plasma is discussed. The stimulated thermal gluon emission reduces while absorption increases the parton's energy. The net…

Nuclear Theory · Physics 2009-11-07 Enke Wang , Xin-Nian Wang

A high energy jet that propagates in a dense medium generates a cascade of partons that can be described as a classical branching process. A simple generating functional for the probabilities to observe a given number of gluons at a given…

High Energy Physics - Phenomenology · Physics 2015-06-18 Jean-Paul Blaizot , Fabio Dominguez , Edmond Iancu , Yacine Mehtar-Tani

Measuring the energy loss of energetic jet partons may provide experimental opportunities to constrain the initial nonequilibrium stages in heavy-ion collisions, which requires theoretical predictions for the jet-medium potential. In this…

High Energy Physics - Phenomenology · Physics 2025-09-05 Alois Altenburger , Kirill Boguslavski , Florian Lindenbauer

Starting from a microscopic approach and using the formalism of quantum Brownian motion, partition function of a system composed of two separated pieces of anisotropic matter and a fluctuating medium in finite temperature is obtained…

Quantum Physics · Physics 2018-06-15 Fardin Kheirandish

Modeling of gamma-ray burst (GRB) prompt emission spectra sometimes requires a (quasi-) thermal spectral component in addition to the Band function. In photospheric emission models, a prominent thermal component broadened by…

High Energy Astrophysical Phenomena · Physics 2020-09-30 Ramandeep Gill , Jonathan Granot , Paz Beniamini

Highly energetic particles in the medium of a quark gluon plasma undergo processes of coherent medium induced radiation and scatterings off medium particles. We solved the evolution equations for particle fragmentation functions that…

High Energy Physics - Phenomenology · Physics 2021-11-17 E. Blanco , K. Kutak , M. Rohrmoser , W. Płaczek , R. Straka

We show that in order to obtain a successful description of the transverse momenta distribution for charged particles in ion-ion collisions, one must include a thermal emission term. The temperature of this emission $T_{\rm th}$ turns out…

High Energy Physics - Phenomenology · Physics 2019-08-21 E. Gotsman , E. Levin

I consider here acceleration and heating of relativistic outflow by local magnetic energy dissipation process in Poynting flux dominated outflow. Adopting the standard assumption that the reconnection rate scales with the Alfven speed, I…

High Energy Astrophysical Phenomena · Physics 2017-12-20 Asaf Pe'er

We consider an initially at rest colored particle which is struck by an ultra-relativistic nucleus. The particle is treated classically both with respect to its motion and its color charge. The nucleus is treated as a sheet of colored glass…

Nuclear Theory · Physics 2019-09-18 Keijo Kajantie , Larry D. McLerran , Risto Paatelainen

We derive medium-induced splitting kernels for energetic partons that undergo interactions in dense QCD matter before a hard-scattering event at large momentum transfer $Q^2$. Working in the framework of the effective theory ${\rm…

High Energy Physics - Phenomenology · Physics 2016-08-24 Grigory Ovanesyan , Felix Ringer , Ivan Vitev

We derive an exact and analytical form for the cold-atom momentum distribution after a large number of one-dimensional (1D) Raman cooling cycles has been applied. Our result shows that one can select pulse profiles and lengths rather freely…

Atomic Physics · Physics 2013-09-02 Vladimir S. Ivanov , Kalle-Antti Suominen

The goal of this paper is to extend the results of Ref. [1], where formulae were derived for gluonic radiation for a high energy nucleus colliding with a classical colored particle. In Ref. [1], we computed the amplitudes for radiation in…

High Energy Physics - Phenomenology · Physics 2020-03-18 K. Kajantie , Larry D. McLerran , Risto Paatelainen

An extension of the classical action principle obtained in the framework of the gauge transformations, is used to describe the motion of a particle. This extension assigns many, but not all, paths to a particle. Properties of the particle…

Quantum Physics · Physics 2007-05-23 S. R. Vatsya

We explore a novel method of describing the radiation friction of particles traveling through a mechanically resistive medium. We introduce a particle motion induced matter warping along the path in a manner assuring that charged particle…

High Energy Physics - Phenomenology · Physics 2020-09-23 Martin Formanek , Andrew Steinmetz , Johann Rafelski

A systematic expansion of the induced inclusive gluon radiation associated with jet production in a dense QCD plasma is derived using a reaction operator formalism. Analytic expressions for the transverse momentum and light-cone momentum…

Nuclear Theory · Physics 2009-10-09 M. Gyulassy , P. Levai , I. Vitev

Consider the in-medium splitting $g \to gg$ of a very high-energy gluon traversing a QCD medium, accounting for the Landau-Pomeranchuk-Migdal (LPM) effect. It has been known for some time that soft radiative corrections to that splitting…

High Energy Physics - Phenomenology · Physics 2022-08-22 Peter Arnold , Tyler Gorda , Shahin Iqbal
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