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Bose-Einstein condensation of pions in ultrarelativistic nucleus-nucleus collisions and the spectra of kaons
- SYS - 0187224 - LBL - 01685^^^^^2200205^^^450 - 005 - 20240409090205.6 - 014 - $a A1995TR75700008 $2 WOS CC. SCIE - 100 - $a 20130821d1995 m y slo 03 ba - 101 - 0- - $a eng - 102 - $a US - 200 - 1- - $a Bose-Einstein condensation of pions in ultrarelativistic nucleus-nucleus collisions and the spectra of kaons $f Evgeni E. Kolomeitsev, D. E. Voskresensky - 330 - 0- - $a 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. - 463 - -1 - $1 001 umb_un_cat*0327298 $1 011 $a 1063-7788 $1 011 $a 1562-692X $1 200 1 $a Physics of Atomic Nuclei $v Vol. 58, no. 12 (1995), pp. 2082-2087 $1 210 $a New York $c Pleiades Publishing $d 1995 - 606 - 0- - $3 umb_un_auth*0119138 $a heavy ion collisions - 606 - 0- - $3 umb_un_auth*0221928 $a transverse-monumentum spectra - 606 - 0- - $3 umb_un_auth*0221929 $a resonance decay - 615 - $n 53 $a Fyzika - 675 - $a 53 - 700 - -1 - $3 umb_un_auth*0131258 $a Kolomeitsev $b Evgeni E. $f 1970- $p UMBFP06 $9 50 $4 070 $T Katedra fyziky - 701 - -1 - $3 umb_un_auth*0160605 $a Voskresensky $b Dmitri $9 50 $4 070 - 801 - $a SK $b BB301 $g AACR2 $9 unimarc sk - T85 - $x existuji fulltexy 
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