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Titolo:
MEDIUM EFFECTS IN STRANGE QUARK MATTER AND STRANGE STARS
Autore:
SCHERTLER K; GREINER C; THOMA MH;
Indirizzi:
UNIV GIESSEN,INST THEORET PHYS D-35392 GIESSEN GERMANY
Titolo Testata:
Nuclear physics. A
fascicolo: 3-4, volume: 616, anno: 1997,
pagine: 659 - 679
SICI:
0375-9474(1997)616:3-4<659:MEISQM>2.0.ZU;2-F
Fonte:
ISI
Lingua:
ENG
Soggetto:
HEAVY-ION COLLISIONS; HOT GAUGE-THEORIES; GLUON-PLASMA; FINITE TEMPERATURE; NEUTRON-STAR; DROPLETS; SEPARATION; PROPAGATOR; MASSES;
Keywords:
STRANGE QUARK MATTER; EFFECTIVE MASSES; QUARK STARS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
40
Recensione:
Indirizzi per estratti:
Citazione:
K. Schertler et al., "MEDIUM EFFECTS IN STRANGE QUARK MATTER AND STRANGE STARS", Nuclear physics. A, 616(3-4), 1997, pp. 659-679

Abstract

We investigate the properties of strange quark matter at zero temperature including medium effects. The quarks are considered as quasiparticles which acquire an effective mass generated by the interaction withthe other quarks of the dense system, The effective quark masses are derived from the zero momentum limit of the dispersion relations following from an effective quark propagator obtained from resumming one-loop self-energy diagrams in the hard dense loop approximation, This leads to a thermodynamic self-consistent description of strange quark matter as an ideal Fermi gas of quasiparticles. Within this approach we find that medium effects reduce the overall binding energy with respectto Fe-56 of strange quark matter, For typical values of the strong coupling constant (alpha(s) greater than or similar to 1) strange quark matter is not absolutely stable. The application to pure strange quarkmatter stars shows that medium effects have, nevertheless, no impact on the mass-radius relation of the stars. However, a phase transition to hadronic matter at the surface of the stars becomes more likely. (C) 1997 Elsevier Science B.V.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 15/07/20 alle ore 08:04:50