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Subensemble is a type of statistical ensemble which is the generalization of grand canonical and canonical ensembles. The subensemble acceptance method (SAM) provides general formulas to correct the cumulants of distributions in heavy-ion…

高能物理 - 唯象学 · 物理学 2023-03-22 Roman V. Poberezhnyuk , Volodymyr Vovchenko , Oleh Savchuk , Volker Koch , Mark I. Gorenstein , Horst Stoecker

We introduce the subensemble acceptance method 2.0 (SAM-2.0) -- a procedure to correct cumulants of a random number distribution inside a subsystem for the effect of exact global conservation of a conserved quantity to which this number is…

高能物理 - 唯象学 · 物理学 2022-01-10 Volodymyr Vovchenko

We derive the relation between cumulants of a conserved charge measured in a subvolume of a thermal system and the corresponding grand-canonical susceptibilities, taking into account exact global conservation of that charge. The derivation…

高能物理 - 唯象学 · 物理学 2020-11-04 Volodymyr Vovchenko , Oleh Savchuk , Roman V. Poberezhnyuk , Mark I. Gorenstein , Volker Koch

The time evolution of particle number fluctuations in nuclear collisions at intermediate energies ($E_{\rm lab} = 1.23-10A$ GeV) is studied by means of the UrQMD-3.5 transport model. The transport description incorporates baryonic…

高能物理 - 唯象学 · 物理学 2023-03-10 O. Savchuk , R. V. Poberezhnyuk , A. Motornenko , J. Steinheimer , M. I. Gorenstein , V. Vovchenko

It has been reported recently that the equipartition theorem is violated in molecular dynamics simulations with periodic boundary condition [Shirts et al, J. Chem. Phys. 125, 164102 (2006)]. This effect is associated with the conservation…

统计力学 · 物理学 2015-06-12 Nima H. Siboni , Dierk Raabe , Fathollah Varnik

Dynamical symmetry breaking in an expanding nuclear system is investigated in semi-classical and quantum framework by employing a collective transport model which is constructed to mimic the collective behavior of expanding systems. It is…

核理论 · 物理学 2009-10-31 W. Wen , P. Chau Huu-Tai , D. Lacroix , Ph. Chomaz , S. Ayik

The critical end point (CEP) is a key feature of the Quantum Chromodynamics (QCD) phase diagram, where critical phenomena cause higher-order moments of conserved charges net-baryon ($\Delta B$), net-charge ($\Delta Q$), and net-strangeness…

高能物理 - 唯象学 · 物理学 2025-02-21 Amal Sarkar , Paramita Deb , Raghava Varma

Impact phenomena of small clusters subject to thermal fluctuations are numerically investigated. From the molecular dynamics simulation for colliding two identical clusters, it is found that the restitution coefficient for head-on…

统计力学 · 物理学 2015-05-13 Hiroto Kuninaka , Hisao Hayakawa

We investigate the long-range statistical correlations, whereby discuss the nature of the undermining interacting/ noninteracting domains and associated phase transitions under variations of the quark mass and the mass scale that…

高能物理 - 格点 · 物理学 2019-08-19 Bhupendra Nath Tiwari

The spinodal amplification of density fluctuations is treated perturbatively within dissipative fluid dynamics for the purpose of elucidating the prospects for this mechanism to cause a phase separation to occur during a relativistic…

核理论 · 物理学 2014-11-21 Jorgen Randrup

We recently introduced a fluid-dynamical model for simulating relativistic nuclear collisions in the presence of a first-order phase transition and made explorative studies of head-on lead-lead collisions. We give here a more detailed…

核理论 · 物理学 2013-05-15 Jan Steinheimer , Jorgen Randrup

We analyze particle number fluctuations in the crossover region near the critical endpoint of a first-order phase transition by utilizing molecular dynamics simulations of the classical Lennard-Jones fluid. We extend our previous study…

High parton densities in ultra-relativistic nuclear collisions suggest a description of these collisions wherein the high energy nuclear wavefunctions and the initial stages of the nuclear collision are dominated by classical fields. This…

核理论 · 物理学 2015-05-28 Kevin Dusling , Francois Gelis , Raju Venugopalan

The evolution of on-site number fluctuations of ultracold atoms in optical lattices is experimentally investigated by monitoring the suppression of spin-changing collisions across the superfluid-Mott insulator transition. For low atom…

其他凝聚态物理 · 物理学 2009-11-11 Fabrice Gerbier , Simon Foelling , Artur Widera , Olaf Mandel , Immanuel Bloch

Multi-modality image fusion, particularly infrared and visible, plays a crucial role in integrating diverse modalities to enhance scene understanding. Although early research prioritized visual quality, preserving fine details and adapting…

计算机视觉与模式识别 · 计算机科学 2025-03-26 Guanyao Wu , Haoyu Liu , Hongming Fu , Yichuan Peng , Jinyuan Liu , Xin Fan , Risheng Liu

We examine a biomolecular machine involving a driven, observable process coupled to a hidden process in a kinetically cooperative manner. A stochastic thermodynamics framework is employed to analyze a fluctuation theorem for the…

统计力学 · 物理学 2025-11-14 D. Evan Piephoff , Jianshu Cao

Extending a previously developed two-phase equation of state, we simulate head-on relativistic lead-lead collisions with fluid dynamics, augmented with a finite-range term, and study the effects of the phase structure on the evolution of…

核理论 · 物理学 2015-06-11 Jan Steinheimer , Jorgen Randrup

Density fluctuations of expanding nuclear matter are studied within a mean-field model in which fluctuations are generated by an external stochastic field. Fluctuations develop about a mean one-body phase-space density corresponding to a…

核理论 · 物理学 2016-09-08 F. Matera , A. Dellafiore , G. Fabbri

We develop methods to deal with non-dynamical contributions to event-by-event fluctuation measurements of net-particle numbers in relativistic nuclear collisions. These contributions arise from impact parameter fluctuations and from the…

核理论 · 物理学 2017-05-09 P. Braun-Munzinger , A. Rustamov , J. Stachel

Optical Flow Estimation aims to find the 2D dense motion field between two frames. Due to the limitation of model structures and training datasets, existing methods often rely too much on local clues and ignore the integrity of objects,…

计算机视觉与模式识别 · 计算机科学 2023-12-22 Shili Zhou , Ruian He , Weimin Tan , Bo Yan
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