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Theoretical studies on the early-time dynamics in the ultra-relativistic heavy-ion collisions are reviewed including pedagogical introductions on the initial condition with small-x gluons treated as a color glass condensate, the bottom-up…

Nuclear Theory · Physics 2017-01-04 Kenji Fukushima

We emphasize that a knowledge of energy and entropy densities of quark gluon plasma - a thermalized de-confined matter, formed in relativistic heavy ion collisions fixes the formation temperature and the product of gluon fugacity and…

Nuclear Theory · Physics 2016-09-22 Dinesh K. Srivastava , Rupa Chatterjee , Munshi G. Mustafa

Non-equilibrium effects are studied using a full Lorentz-invariant formalism. Our analysis shows that in reactions considered here, no global or local equilibrium is reached. The heavier masses are found to be equilibrated more than the…

Nuclear Theory · Physics 2016-09-08 Rajeev K. Puri , E. Lehmann , Amand Faessler , S. W. Huang

We describe the energy distribution of hard gluons travelling through a dense quark-gluon plasma whose temperature increases linearly with time, within a probabilistic perturbative approach. The results were applied to the thermalization…

High Energy Physics - Phenomenology · Physics 2022-01-21 F. G. Ben , M. V. T. Machado

Nuclear collisions at intermediate, relativistic, and ultra-relativistic energies offer unique opportunities to study in detail manifold fragmentation and clustering phenomena in dense nuclear matter. At intermediate energies, the well…

Nuclear Theory · Physics 2007-05-23 Stefan Scherer , Horst Stocker

The onset of thermalization in heavy ion collisions in the weak coupling framework can be viewed as a transition from the initial state Color Glass Condensate dynamics, characterized by the energy density scaling like $\epsilon \sim 1/\tau$…

High Energy Physics - Phenomenology · Physics 2010-11-30 Yuri V. Kovchegov

Recent progress of the quantum molecular dynamics model for describing the dynamics of heavy-ion collisions is viewed, in particular the nuclear fragmentation, isospin physics, particle production and in-medium effect, hadron-induced…

Nuclear Theory · Physics 2018-03-01 Zhao-Qing Feng

We have compiled a set of electron-impact multiple ionization (EIMI) cross sections for astrophysically relevant ions. EIMI can have a significant effect on the ionization balance of non-equilibrium plasmas. For example, it can be important…

Instrumentation and Methods for Astrophysics · Physics 2017-12-06 Michael Hahn , Alfred Mueller , Daniel Wolf Savin

The current status of various thermal and statistical descriptions of particle production in the ultra-relativistic heavy-ion collisions experiments is presented in detail. We discuss the formulation of various types of thermal models of a…

High Energy Physics - Phenomenology · Physics 2017-01-06 S. K. Tiwari , C. P. Singh

The non-equilibrium electron-positron-photon plasma thermalization process is studied using relativistic Boltzmann solver, taking into account quantum corrections both in non-relativistic and relativistic cases. Collision integrals are…

High Energy Astrophysical Phenomena · Physics 2018-12-20 M. A. Prakapenia , I. A. Siutsou , G. V. Vereshchagin

We simulate the central reactions of nearly symmetric, and asymmetric systems, for the energies at which the maximum production of IMFs occurs (E$_{c.m.}^{peak}$).This study is carried out by using hard EOS along with cugnon cross section…

Nuclear Theory · Physics 2011-07-13 Aman D. Sood , Sukhjit Kaur

We use a holographic method to investigate thermalization of a boost-invariant strongly interacting non-Abelian plasma. Boundary sourcing, a distorsion of the boundary metric, is employed to drive the system far from equilibrium.…

High Energy Physics - Phenomenology · Physics 2016-07-13 Loredana Bellantuono , Pietro Colangelo , Fulvia De Fazio , Floriana Giannuzzi , Stefano Nicotri

Recent classical-statistical numerical simulations have established the "bottom-up" thermalization scenario of Baier et al. as the correct weak coupling effective theory for thermalization in ultrarelativistic heavy-ion collisions. We…

Nuclear Theory · Physics 2017-05-17 J. Berges , K. Reygers , N. Tanji , R. Venugopalan

Interacting Fermi systems in the strongly correlated regime play a fundamental role in many areas of physics and are of particular interest to the condensed matter community. Though weakly inter- acting fermions are understood, strongly…

Quantum Gases · Physics 2016-07-27 Brendan C. Mulkerin , Xia-Ji Liu , Hui Hu

We use all-optical methods to produce a highly-degenerate Fermi gas of spin-1/2 $^6$Li atoms. A magnetic field tunes the gas near a collisional (Feshbach) resonance, producing strong interactions between spin-up and spin-down atoms. This…

Other Condensed Matter · Physics 2009-11-13 A. Turlapov , J. Kinast , B. Clancy , Le Luo , J. Joseph , J. E. Thomas

From sand piles to electrons in metals, one of the greatest challenges in modern physics is to understand the behavior of an ensemble of strongly interacting particles. A class of quantum many-body systems such as neutron matter and cold…

Quantum Gases · Physics 2010-06-01 Sylvain Nascimbène , Nir Navon , Kaijun Jiang , Frédéric Chevy , Christophe Salomon

In the article an ultracold electron-ion plasma created by photoionization of cooled atoms is investigated. We obtained analitical expressions for non-ideality parameters which establish due to correlation heating. In the work the nearest…

Plasma Physics · Physics 2011-08-01 Anatoli Gavrilyuk

A collision between two atomic nuclei accelerated at a speed close to that of light creates a dense system of quarks and gluons. Interactions among them are so strong that they behave collectively like a droplet of fluid of ten-femtometer…

Nuclear Theory · Physics 2024-05-07 Rupam Samanta , Somadutta Bhatta , Jiangyong Jia , Matthew Luzum , Jean-Yves Ollitrault

We investigate the space-time structure of the classical gluon field produced in an ultrarelativistic collision between color charges. The classical solution which was computed previously in a perturbative approach is shown to become…

Nuclear Theory · Physics 2008-11-26 S. G. Matinyan , B. Mueller , D. H. Rischke

Calculations of nonequilibrium processes become increasingly feasable in quantum field theory from first principles. There has been important progress in our analytical understanding based on 2PI generating functionals. In addition, for the…

High Energy Physics - Theory · Physics 2010-02-04 J. Berges , Sz. Borsanyi