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Titolo:
NEUTRON-STARS AND NUCLEI IN THE MODIFIED RELATIVISTIC HARTREE APPROXIMATION
Autore:
PRAKASH M; ELLIS PJ; HEIDE EK; RUDAZ S;
Indirizzi:
UNIV MINNESOTA,INST THEORET PHYS MINNEAPOLIS MN 55455 UNIV MINNESOTA,SCH PHYS & ASTRON MINNEAPOLIS MN 55455 SUNY STONY BROOK,DEPT PHYS STONY BROOK NY 11794 UNIV WASHINGTON,INST NUCL THEORY SEATTLE WA 98195
Titolo Testata:
Nuclear physics. A
fascicolo: 3, volume: 575, anno: 1994,
pagine: 583 - 604
SICI:
0375-9474(1994)575:3<583:NANITM>2.0.ZU;2-Y
Fonte:
ISI
Lingua:
ENG
Soggetto:
FINITE NUCLEI; VACUUM POLARIZATION; 2-LOOP CORRECTIONS; WALECKA MODEL; GROUND-STATE; MASS FORMULA; FIELD-THEORY; DIRAC SEA; MATTER; EQUATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
61
Recensione:
Indirizzi per estratti:
Citazione:
M. Prakash et al., "NEUTRON-STARS AND NUCLEI IN THE MODIFIED RELATIVISTIC HARTREE APPROXIMATION", Nuclear physics. A, 575(3), 1994, pp. 583-604

Abstract

We have examined the properties of neutron-rich matter and finite nuclei in the modified relativistic Hartree approximation for several values of the renormalization parameter, mu, around the standard choice of mu equal to the nucleon mass M. Observed neutron-star masses do not effectively constrain the value of mu. However, for finite nuclei the value mu/M = 0.79, suggested by nuclear matter data, provides a good account of the bulk properties with a sigma mass of about 600 MeV. Thisvalue of mu/M renders the effective three- and four-body scalar self-couplings to be zero at 60% of equilibrium nuclear matter density. We have also found that the matter part of the exchange diagram has little impact on the bulk properties of neutron stars.

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Documento generato il 28/11/20 alle ore 04:11:50