ρ-meson coupling in the chiral bag model

1982 ◽  
Vol 25 (5) ◽  
pp. 1432-1435 ◽  
Author(s):  
W. Ferchländer
Keyword(s):  
Bag Model ◽  
Meson Coupling

QUARK–GLUON PLASMA IN A BAG MODEL WITH A SOFT SURFACE

2004 ◽  
Vol 13 (07) ◽  
pp. 1431-1435 ◽  
Author(s):  
RAFAEL B. JACOBSEN ◽  
GUILHERME F. MARRANGHELLO ◽  
CÉSAR A. Z. VASCONCELLOS ◽  
ALEXANDRE MESQUITA
Keyword(s):  
Degrees Of Freedom ◽  
Chemical Potential ◽  
Equilibrium Phase ◽  
Coupling Model ◽  
Baryon Number ◽  
Gluon Plasma ◽  
Bag Model ◽  
Meson Coupling ◽  
Hadron Gas ◽  
Equilibrium Phase Transition

We analyze the implications of quantum hadrodynamics (QHD) and quantum chromodynamics (QCD) to model, respectively, two distinct phases of nuclear matter, a baryon–meson phase and a quark–gluon phase. We develop an equation of state (EoS) in the framework of a quark–meson coupling model for the hadron–meson phase using a new version of the fuzzy bag model with scalar–isoscalar, vector–isoscalar and vector–isovector meson–quark couplings and leptonic degrees of freedom as well as the constrains from chemical equilibrium, baryon number and electric charge conservation. We model the EoS for the QGP phase for asymptotically free massless quarks and gluons using the MIT approach and a temperature and baryon chemical potential dependent bag constant, B(T,μ), which allows an isentropic equilibrium phase transition from a QGP to a hadron gas as determined by thermodynamics. Our predictions yield the EoS and static global properties of neutron stars and protoneutron stars at low and moderate values of temperature. Our results are slightly modified in comparison to predictions based on the standard MIT bag model with a constant bag pressure B.

THE STRUCTURE OF NEUTRON STAR BY USING THE QUARK-MESON COUPLING MODEL

2011 ◽  
Vol 01 ◽  
pp. 177-182
Author(s):  
C. Y. RYU ◽  
MYUNG-KI CHEOUN
Keyword(s):  
Neutron Star ◽  
Quark Matter ◽  
Coupling Model ◽  
Bag Model ◽  
Kaon Condensation ◽  
Meson Coupling ◽  
Mit Bag Model

We investigate the structure of neutron star within the framework of the quark-meson coupling model, considering hyperons and kaon condensation. In order to compare the EoS with that from quark matter, the MIT bag model is used. We calculate the mass and radius of a neutron star by using Tolman-Oppenheimer-Volkov equations.

scholarly journals Quark cores in extensions of the MIT Bag model

2021 ◽  
Author(s):  
Salil Joshi ◽  
Sovan Sau ◽  
Soma Sanyal
Keyword(s):  
Bag Model ◽  
Mit Bag Model

scholarly journals Neutron stars within the Bogoliubov quark-meson coupling model

2021 ◽  
Vol 103 (3) ◽  
Author(s):  
Aziz Rabhi ◽  
Constança Providência ◽  
Steven A. Moszkowski ◽  
João da Providência ◽  
Henrik Bohr
Keyword(s):  
Neutron Stars ◽  
Coupling Model ◽  
Meson Coupling

scholarly journals A dressed-bag model study of the short-rangeN  interaction in pion photoproduction processes off the deuteron

2003 ◽  
Vol 29 (9) ◽  
pp. 2207-2226 ◽  
Author(s):  
I T Obukhovsky ◽  
V I Kukulin ◽  
Murat M Kaskulov ◽  
Peter Grabmayr ◽  
Amand Faessler
Keyword(s):  
Pion Photoproduction ◽  
Bag Model ◽  
Model Study

CRANKING THE CHIRAL SOLITON BAG MODEL: QUANTUM CORRECTIONS

1988 ◽  
Vol 03 (13) ◽  
pp. 1285-1290 ◽  
Author(s):  
GÉRARD CLEMENT ◽  
JACQUELINE STERN
Keyword(s):  
Coherent State ◽  
Mean Field ◽  
Projection Methods ◽  
Quantum Corrections ◽  
Drastic Reduction ◽  
Bag Model ◽  
Chiral Soliton ◽  
The Mean

The generation of physical states from mean field hedgehogs by cranking is extended to coherent hedgehogs, thus improving the agreement between the cranking and coherent state projection methods, and enabling us to correct simultaneously for translational and rotational fluctuations. These corrections lead to a drastic reduction in the mean nucleon-delta mass which, for the physical values of mπ and Fπ, is lower than, or approximately equal to, the experimental value.

scholarly journals Energy budget and the gravitational wave spectra beyond the bag model

2021 ◽  
Vol 103 (10) ◽  
Author(s):  
Xiao Wang ◽  
Fa Peng Huang ◽  
Xinmin Zhang
Keyword(s):  
Gravitational Wave ◽  
Energy Budget ◽  
Wave Spectra ◽  
Bag Model
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