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Particle number fluctuations in a non-ideal pion gas
Title Particle number fluctuations in a non-ideal pion gas Author info Evgeni E. Kolomeitsev, Maxim E. Borisov, Dmitry N. Voskresensky Author Kolomeitsev Evgeni E. 1970- (98%) UMBFP06 - Katedra fyziky
Co-authors Borisov Maxim E. (1%)
Voskresensky Dmitri (1%)
Source document 6th international conference on new frontiers in physics (ICNFP 2017). Pp. [1-7]. - Les Ulis : Édition Diffusion Presse Sciences, 2018 ; International conference on new frontiers in physics (ICNFP 2017) medzinárodná konferencia Note Príspevok je evidovaný v databáze Scopus. Keywords particle number fluctuations pion gas particle physics Language English Country France systematics 53 Annotation We consider a non-ideal hot pion gas with the dynamically fixed number of particles in the model with the lambda-phi^4 interaction. The effective Lagrangian for the description of such a system is obtained by dropping the terms responsible for the change of the total particle number. Within the self-consistent Hartree approximation, we compute the effective pion mass, thermodynamic characteristics of the system and identify a critical point of the induced Bose-Einstein condensation when the pion chemical potential reaches the value of the effective pion mass. The normalized variance, skewness, and kurtosis of the particle number distributions are calculated. We demonstrate that all these characteristics remain finite at the critical point of the Bose-Einstein condensation. This is due to the non-perturbative account of the interaction and is in contrast to the ideal-gas case URL Link na zdrojový dokument Public work category AFC No. of Archival Copy 43933 Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ 
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Number of the records: 1