Modified Quark-Meson-Coupling Model and Quark Condensate in Nuclear Matter

2000 ◽  
Vol 34 (3) ◽  
pp. 471-476
Author(s):  
Guo Hua
Keyword(s):  
Nuclear Matter ◽  
Coupling Model ◽  
Quark Condensate ◽  
Meson Coupling

scholarly journals Quark-meson coupling model, nuclear matter constraints, and neutron star properties

2014 ◽  
Vol 89 (6) ◽  
Author(s):  
D. L. Whittenbury ◽  
J. D. Carroll ◽  
A. W. Thomas ◽  
K. Tsushima ◽  
J. R. Stone
Keyword(s):  
Neutron Star ◽  
Nuclear Matter ◽  
Coupling Model ◽  
Meson Coupling

scholarly journals Nuclear matter properties of the modified quark-meson coupling model

1997 ◽  
Vol 626 (4) ◽  
pp. 966-986 ◽  
Author(s):  
H. Müller ◽  
B.K. Jennings
Keyword(s):  
Nuclear Matter ◽  
Coupling Model ◽  
Meson Coupling

scholarly journals Droplet formation in cold asymmetric nuclear matter in the quark–meson-coupling model

2000 ◽  
Vol 674 (1-2) ◽  
pp. 125-140 ◽  
Author(s):  
G. Krein ◽  
D.P. Menezes ◽  
M. Nielsen ◽  
C. Providência
Keyword(s):  
Nuclear Matter ◽  
Coupling Model ◽  
Droplet Formation ◽  
Asymmetric Nuclear Matter ◽  
Meson Coupling

scholarly journals NUCLEON SIGMA TERM AND IN-MEDIUM QUARK CONDENSATE IN THE MODIFIED Quark–MESON COUPLING MODEL

1999 ◽  
Vol 14 (04) ◽  
pp. 289-297 ◽  
Author(s):  
XUEMIN JIN ◽  
MANUEL MALHEIRO
Keyword(s):  
Chiral Symmetry ◽  
Linear Order ◽  
Coupling Model ◽  
Quark Condensate ◽  
Chiral Symmetry Restoration ◽  
Density Dependent ◽  
Sigma Term ◽  
Meson Coupling ◽  
Model Independent ◽  
Bag Constant

We evaluate the nucleon sigma term and in-medium quark condensate in the modified quark–meson coupling model which features a density-dependent bag constant. We obtain a nucleon sigma term consistent with its empirical value, which requires a significant reduction of the bag constant in the nuclear medium similar to those found in the previous works. The resulting in-medium quark condensate at low densities agrees well with the model-independent linear order result. At higher densities, the magnitude of the in-medium quark condensate tends to increase, indicating no tendency towards chiral symmetry restoration.

scholarly journals Hot nuclear matter in the quark meson coupling model

1997 ◽  
Vol 56 (6) ◽  
pp. 3134-3139 ◽  
Author(s):  
P. K. Panda ◽  
A. Mishra ◽  
J. M. Eisenberg ◽  
W. Greiner
Keyword(s):  
Nuclear Matter ◽  
Coupling Model ◽  
Meson Coupling

scholarly journals Hot nuclear matter in the modified quark meson coupling model with dilatons

1999 ◽  
Vol 59 (2) ◽  
pp. 968-975 ◽  
Author(s):  
I. Zakout ◽  
H. R. Jaqaman
Keyword(s):  
Nuclear Matter ◽  
Coupling Model ◽  
Meson Coupling

scholarly journals QUARK AND GLUON CONDENSATES IN THE QUARK–MESON COUPLING MODEL

1998 ◽  
Vol 13 (10) ◽  
pp. 769-777 ◽  
Author(s):  
K. SAITO ◽  
K. TSUSHIMA ◽  
A. W. THOMAS
Keyword(s):  
Mean Field ◽  
Gluon Condensate ◽  
Coupling Model ◽  
Field Approximation ◽  
Quark Condensate ◽  
Mean Field Approximation ◽  
Simple Relationship ◽  
Gluon Condensates ◽  
Hadron Mass ◽  
Meson Coupling

Using the quark–meson coupling (QMC) model, we study the density dependence of the quark and gluon condensates in nuclear matter. We show that the change of the quark condensate is mainly driven by the scalar field in the medium and that the reduction of the quark condensate is suppressed at high density, even in the mean-field approximation. The gluon condensate decreases by 4–6% at nuclear saturation density. We also give a simple relationship between the change of the quark condensate and that of a hadron mass in the medium.

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