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Elongated particles in dense systems often exhibit alignment due to volume exclusion interactions, leading to packing configurations. Traditional models of collective dynamics typically impose this alignment phenomenologically, neglecting…

偏微分方程分析 · 数学 2025-05-13 Sara Merino-Aceituno , Steffen Plunder , Claudia Wytrzens , Havva Yoldaş

We analyze the time evolution of the kinetic properties of nuclear matter produced in heavy-ion collisions at Fermi energies. The collision system is simulated using Constrained Molecular Dynamics (CoMD) transport calculations whose output…

核理论 · 物理学 2023-11-01 Thomas Onyango , Aldo Bonasera , Ralf Rapp

We investigate the effects of the pre-equilibrium Glasma stage of heavy-ion collisions on the broadening of momentum for heavy quarks and jets using classical colored particle simulations based on Wong's equations. Confirming previous…

高能物理 - 唯象学 · 物理学 2023-04-04 Dana Avramescu , Virgil Băran , Vincenzo Greco , Andreas Ipp , David. I. Müller , Marco Ruggieri

Deformation and orientation effects on compression, elliptic flow and particle production in uranium on uranium collisions (UU) at relativistic energies are studied within the transport model ART. The density compression in tip-tip UU…

核理论 · 物理学 2009-10-31 Bao-An Li

Momentum correlation functions of light (anti)nuclei formed by the coalescence mechanism of (anti)nucleons are calculated for several central heavy-ion collision systems, namely $_{5}^{10}\textrm{B}+_{5}^{10}\textrm{B}$,…

高能物理 - 唯象学 · 物理学 2023-01-10 Ting-Ting Wang , Yu-Gang Ma , Song Zhang

The elliptic azimuthal anisotropy coefficient ($v_{2}$) of the identified particles at midrapidity ($|\eta|<0.8$) was investigated in p--Pb collisions at $\sqrt{s_\mathrm{NN}}=$ 5.02 TeV using a multi-phase transport model (AMPT). The…

高能物理 - 唯象学 · 物理学 2024-04-01 Siyu Tang , Liang Zheng , Xiaoming Zhang , Renzhuo Wan

We predict the transverse momentum (pT) dependence of elliptic flow of thermal photons for Au+Au collisions at the Relativistic Heavy Ion Collider. We model the system hydrodynamically, assuming formation of a thermalized quark-gluon plasma…

In heavy-ion collisions, as the two nuclei pass through one another and create hot and dense matter, part of their initial angular momentum is transferred to the fireball, generating a nonzero average vorticity. Understanding heavy-ion…

核理论 · 物理学 2025-10-14 Oleh Savchuk , Pawel Danielewicz , Daniel Kincses , Agnieszka Sorensen

The System for Measuring Overlap with Gas (SMOG2) at the LHCb detector enables the study of fixed-target ion-ion collisions at relativistic energies ($\sqrt{s_{\rm NN}}\sim100$ GeV in the centre-of-mass). With input from \textit{ab initio}…

Previous extensive studies on the dependence of the average transverse momentum, its slope as a function of the hadron mass and the average transverse expansion on the particle multiplicity per unit rapidity and unit transverse overlap area…

高能物理 - 唯象学 · 物理学 2023-02-01 M. Petrovici , A. Pop

To reduce the effect of the fluctuations of initial geometrical shape, elliptic flow are studied at fixed centrality in Au+Au collision at $\sqrt{s_{\rm NN}}$=200GeV. It is observed with the participant increasing, elliptic flow has an…

核理论 · 物理学 2012-08-31 Wang Meijuan , Chen Gang , Wu Yuanfang

Based on the isospin-dependent Boltzmann-Uehling-Uhlenbeck transport model, we systematically investigate the in-medium effects of nucleon-nucleon ($NN$) cross sections on nucleonic and pionic observables in heavy-ion collisions, employing…

核理论 · 物理学 2026-05-26 Shuochong Han , Xinle Shang , Wei Zuo , Gaochan Yong , Ang Li

We employ an isospin dependent version of the QMD transport model to study the influence of the isospin dependent part of the nuclear matter equation of state and in-medium nucleon-nucleon cross-sections on the dynamics of heavy-ion…

核理论 · 物理学 2011-09-23 M. D. Cozma

Strong multiparticle azimuthal correlations have recently been observed in high energy proton-nucleus collisions. While final state collective effects can be responsible for many of the observations, the domain structure in the classical…

高能物理 - 唯象学 · 物理学 2016-11-23 T. Lappi

We study the influence of geometric and dynamical anisotropies on the development of flow harmonics and, simultaneously, on the second- and third-order oscillations of femtoscopy radii. The analysis is done within the Monte Carlo event…

高能物理 - 唯象学 · 物理学 2017-11-20 L. V. Bravina , I. P. Lokhtin , L. V. Malinina , S. V. Petrushanko , A. M. Snigirev , E. E. Zabrodin

The mechanism of heating for hot, dilute, and turbulent plasmas represents a long-standing problem in space physics, whose implications concern both near-Earth environments and astrophysical systems. In order to explore the possible role of…

等离子体物理 · 物理学 2019-12-20 O. Pezzi , D. Perrone , S. Servidio , F. Valentini , L. Sorriso-Valvo , P. Veltri

In high energy heavy-ion collisions the magnetic field is very strong right after the nuclei penetrate each other and a non-equilibrium system of quarks and gluons builds up. Even though quarks might not be very abundant initially, their…

高能物理 - 唯象学 · 物理学 2017-07-12 Moritz Greif , Carsten Greiner , Zhe Xu

The azimuthal anisotropy of charged particles in PbPb collisions at nucleon-nucleon center-of-mass energy of 2.76 TeV is measured with the CMS detector at the LHC over an extended transverse momentum (pt) range up to approximately 60 GeV.…

核实验 · 物理学 2013-03-21 CMS Collaboration

Azimuthal anisotropy has been ubiquitously observed in high-energy proton-proton, proton-nucleus, and nucleus-nucleus (heavy-ion) collisions, shaking the early belief that those anisotropies require an intense phase of multiple interactions…

量子气体 · 物理学 2025-09-30 Ke Li , Hong-Fang Song , Hao-Jie Xu , Yu-Liang Sun , Fuqiang Wang

The problem of anisotropic pressures arising as a consequence of the spatial symmetry breaking introduced by an external magnetic field in quantum systems is discussed. The role of the conservation of energy and momentum of external fields…

天体物理学 · 物理学 2009-02-11 A. Perez Martinez , H. Perez Rojas , H. Mosquera Cuesta