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Titolo:
STRANGENESS IN HADRONIC STELLAR MATTER
Autore:
KNORREN R; PRAKASH M; ELLIS PJ;
Indirizzi:
SUNY STONY BROOK,DEPT PHYS STONY BROOK NY 11794 UNIV MINNESOTA,SCH PHYS & ASTRON MINNEAPOLIS MN 55455
Titolo Testata:
Physical review. C. Nuclear physics
fascicolo: 6, volume: 52, anno: 1995,
pagine: 3470 - 3482
SICI:
0556-2813(1995)52:6<3470:SIHSM>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
MESON-EXCHANGE MODEL; DIRECT URCA PROCESS; NEUTRON-STARS; KAON CONDENSATION; NUCLEAR-MATTER; FIELD-THEORY; HYPERNUCLEI;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
38
Recensione:
Indirizzi per estratti:
Citazione:
R. Knorren et al., "STRANGENESS IN HADRONIC STELLAR MATTER", Physical review. C. Nuclear physics, 52(6), 1995, pp. 3470-3482

Abstract

We examine the presence of strangeness-bearing components, hyperons and kaons, in dense neutron star matter. Calculations are performed using relativistic mean field models, in which both the baryon-baryon andkaon-baryon interactions are mediated by meson exchange. Results of kaon condensation are found to be qualitatively similar to previous work with chiral models, if compatibility of the kaon optical potentials is required. The presence of strangeness, be it in the form of hyperons or kaons, implies a reduction in the maximum mass and a relatively large number of protons, sufficient to allow rapid cooling to take place. The need to improve upon the poorly known couplings of the strange particles, which determine the composition and structure of neutron stars, is stressed. We also discuss generic problems with effective masses in mean field theories.

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Documento generato il 26/11/20 alle ore 14:16:51