Molecular dynamics analysis of particle number fluctuations in the mixed phase of a first-order phase transition

Autor:	Kuznietsov, Volodymyr A., Savchuk, Oleh, Poberezhnyuk, Roman V., Vovchenko, Volodymyr, Gorenstein, Mark I., Stoecker, Horst
Rok vydání:	2023
Předmět:	High Energy Physics - Phenomenology
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevC.107.055206
Popis:	Molecular dynamics simulations are performed for a finite non-relativistic system of particles with Lennard-Jones potential. We study the effect of liquid-gas mixed phase on particle number fluctuations in coordinate subspace. A metastable region of the mixed phase, the so-called nucleation region, is analyzed in terms of a non-interacting cluster model. Large fluctuations due to spinodal decomposition are observed. They arise due to the interplay between the size of the acceptance region and that of the liquid phase. These effects are studied with a simple geometric model. The model results for the scaled variance of particle number distribution are compared with those obtained from the direct molecular dynamic simulations. Comment: 13 pages, 9 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2303.09193 Zobrazit plný text záznamu View this record from Arxiv