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Bose-Einstein condensation of pions in ultrarelativistic nucleus-nucleus collisions and the spectra of kaons
Title Bose-Einstein condensation of pions in ultrarelativistic nucleus-nucleus collisions and the spectra of kaons Author info Evgeni E. Kolomeitsev, D. E. Voskresensky Author Kolomeitsev Evgeni E. 1970- (50%) UMBFP06 - Katedra fyziky
Co-authors Voskresensky Dmitri (50%)
Source document Physics of Atomic Nuclei. Vol. 58, no. 12 (1995), pp. 2082-2087. - New York : Pleiades Publishing, 1995 Keywords heavy ion collisions transverse-monumentum spectra resonance decay Language English Country United States of America systematics 53 Annotation The properties of a pion gas that is formed in ultrarelativistic collisions of nuclei are studied in the Weinberg model for pi pi interaction. The possible Bose-Einstein condensation of a dense pi(-) gas is considered. The Green's function and the spectrum of the overcondensate excitations are calculated. For a weak condensate, the results coincide with those obtained in [1] in the lambda phi(4) model (lambda = const), while for a developed condensate there are significant differences. The properties of kaons are considered for temperatures below the critical temperature for Bose-Einstein pion condensation. It is shown that, in the presence of a condensate, the K- effective mass becomes substantially larger, while the K+ effective mass becomes smaller. These features may manifest themselves in the observable momentum distributions of kaons. Public work category ADE No. of Archival Copy 7083 Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ References PERIODIKÁ-Súborný záznam periodika 
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