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We discuss geometrical scaling (GS) for the prompt (direct) photons produced in heavy ion collisions. To this end we first introduce the concept of GS and illustrate its emergence on the example of charged particles. Next, we analyse direct…

高能物理 - 唯象学 · 物理学 2019-05-22 Michal Praszalowicz

The dynamical entropy of dense gluonic states in proton-proton collisions at high energies is studied by using phenomenological models for the unintegrated gluon distribution. The corresponding transverse momentum probability distributions…

高能物理 - 唯象学 · 物理学 2022-05-25 G. S. Ramos , M. V. T. Machado

In this paper, we show that multiplicity spectra of direct photons in A+A and d+Au collisions at different centrality classes and different energies exhibit geometrical scaling, {\em i.e.}, they depend on a specific combination of number of…

核理论 · 物理学 2023-04-26 Vladimir Khachatryan , Michal Praszalowicz

We present a theory of effective electrostatic interactions in polydisperse suspensions of charged macroions, generalizing to mixtures a theory previously developed for monodisperse suspensions. Combining linear response theory with a…

软凝聚态物质 · 物理学 2013-08-20 Jun Kyung Chung , Alan R. Denton

We study a number of (3+1)- and (2+1)-dimensional defect and boundary conformal field theories holographically dual to supergravity theories. In all cases the defects or boundaries are planar, and the defects are codimension-one. Using…

高能物理 - 理论 · 物理学 2015-11-09 John Estes , Kristan Jensen , Andy O'Bannon , Efstratios Tsatis , Timm Wrase

We perform a global analysis of deep-inelastic $e+p$ scattering data from HERA and transverse energy distributions in $p+p$ and $p+\mathrm{Pb}$ collisions, alongside charged hadron multiplicities in $\mathrm{Pb}+\mathrm{Pb}$ collisions at…

An efficient technique to simulate turbulent particle-laden flow at high mass loadings within the four-way coupled simulation regime is presented. The technique implements large eddy simulation, discrete phase simulation, a deterministic…

流体动力学 · 物理学 2017-09-13 Derrick O. Njobuenwu , Michael Fairweather

We consider the Einstein-Maxwell system as a Cauchy initial value problem taking the electric and magnetic fields as independent variables. Maxwell's equations in curved spacetimes are derived in detail using a 3+1 formalism and their…

广义相对论与量子宇宙学 · 物理学 2009-11-29 Miguel Alcubierre , Juan Carlos Degollado , Marcelo Salgado

In this work, we perform a holographic analysis to study non local observables associated to a uniformly \textit{boosted} strongly coupled large $N$ thermal plasma in $d$-dimensions. In order to accomplish the holographic analysis, the…

高能物理 - 理论 · 物理学 2020-08-26 Atanu Bhatta , Shankhadeep Chakrabortty , Suat Dengiz , Ercan Kilicarslan

This work studies the production of direct photons in relativistic nuclear collisions, along with the production of hadrons. Radiation from the very first instants to the final moments of the evolution is included. The hybrid model used…

核理论 · 物理学 2022-02-01 Charles Gale , Jean-François Paquet , Björn Schenke , Chun Shen

Collisions between nuclei at ultrarelativistic energies produce a color-deconfined plasma that expands explosively and rapidly reverts to the color-confined (hadronic) state. In non-central collisions, the zone of hot matter is transversely…

核理论 · 物理学 2011-06-10 M. A. Lisa , E. Frodermann , G. Graef , M. Mitrovski , E. Mount , H. Petersen , M. Bleicher

We study in detail the transverse collective modes of simple holographic models in presence of electromagnetic Coulomb interactions. We render the Maxwell gauge field dynamical via mixed boundary conditions, corresponding to a double trace…

高能物理 - 理论 · 物理学 2020-05-01 Matteo Baggioli , Ulf Gran , Marcus Tornsö

We construct a model of high energy heavy ion collisions as two ultrarelativistic shock waves colliding in AdS_5. We point out that shock waves corresponding to physical energy-momentum tensors of the nuclei completely stop almost…

高能物理 - 理论 · 物理学 2008-11-26 Javier L. Albacete , Yuri V. Kovchegov , Anastasios Taliotis

We study the time evolution of 2-point functions and entanglement entropy in strongly anisotropic, inhomogeneous and time-dependent N=4 super Yang-Mills theory in the large N and large 't Hooft coupling limit using AdS/CFT. On the gravity…

高能物理 - 理论 · 物理学 2017-10-31 Christian Ecker , Daniel Grumiller , Philipp Stanzer , Stefan A. Stricker , Wilke van der Schee

In this work, the concept of QCD dynamical entropy is extended to heavy ion systems. This notion of entropy can be understood as a relative entropy and can also be used to estimate the initial entropy density in ultra-relativistic heavy ion…

高能物理 - 唯象学 · 物理学 2025-07-15 G. S. Ramos , L. S. Moriggi , M. V. T. Machado

Hot, dense plasmas exhibit screened Coulomb interactions, resulting from the collective effects of correlated many-particle interactions. In the lowest particle correlation order (pair-wise correlations), the interaction between charged…

原子物理 · 物理学 2016-11-29 R. K. Janev , Song Bin Zhang , Jian Guo Wang

The elastic collision between two H-like atoms utilizing an ab-initio static-exchange model (SEM) in the center of mass (CM) frame considering the system as a four-body Coulomb problem where all the Coulomb interaction terms in the direct…

原子物理 · 物理学 2023-07-19 Hasi Ray

The equilibrium density profiles in a classical multicomponent plasma near a hard wall made with a dielectric material characterized by a relative dielectric constant $\ew$ are studied from the first Born-Green-Yvon equation combined with…

统计力学 · 物理学 2007-05-23 Jean-Noel Aqua , Francoise Cornu

Energy correlations characterize the energy flux through detectors at infinity produced in a collision event. Remarkably, in holographic conformal field theories, they probe high-energy gravitational scattering in the dual anti-de Sitter…

高能物理 - 理论 · 物理学 2024-04-24 Hao Chen , Robin Karlsson , Alexander Zhiboedov

From the microscopic theory, we derive a number conserving quantum kinetic equation, valid for a dilute Bose gas at any temperature, in which the binary collisions between the quasi-particles are mediated by phonon-like excitations (called…

统计力学 · 物理学 2007-05-23 Patrick Navez