Work

Microscopic study of non-Gaussian particle number fluctuations near the critical point

Year: 2026

Type: article

Abstract: We simulate a classical Lennard-Jones fluid at fixed number of particles N = 400 via molecular dynamics to study higher-order particle number cumulants near the liquid-gas critical point, along T = 1.06 Tc, at densities 0.32nc,0.95nc, and 1.9nc. Coordinate space results obtained with a statistics of 2 millions events reveals strong non-Gaussian signals near critical point despite of the suppression due to the baryon number conservation. In momentum space, the cumulants follow ideal gas behavior. Due to collective flow effects imposed the critical signals are partially restored and are especially strong around √sNN ≈ 7.7 GeV. Our findings are discussed in a context of heavy-ion collision experiments.

Source: Springer Link (Chiba Institute of Technology)

DOI: 10.1051/epjconf/202636405003/pdf

Authors: Volodymyr A. Kuznietsov, Roman Poberezhniuk, Mark I. Gorenstein, Volker Koch, Volodymyr Vovchenko

Institutions: Bogolyubov Institute for Theoretical Physics, University of Houston, Lawrence Berkeley National Laboratory

Language: English

Topic: High-Energy Particle Collisions Research

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W7155171965

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