scholarly journals Effects of Charged-Pion Condensation on Neutron 3P2 Superfluidity

1998 ◽  
Vol 99 (1) ◽  
pp. 161-161
Author(s):  
T. Takatsuka ◽  
R. Tamagaki
Keyword(s):  
Charged Pion ◽  
Pion Condensation

scholarly journals Baryonic 3 P2 Superfluidity under Charged-Pion Condensation with   Isobar

1999 ◽  
Vol 101 (5) ◽  
pp. 1043-1081 ◽  
Author(s):  
T. Takatsuka ◽  
R. Tamagaki
Keyword(s):  
Charged Pion ◽  
Pion Condensation

scholarly journals Charged Pion Condensation in Dense Quark Matter: Nambu–Jona-Lasinio Model Study

Symmetry ◽  
2019 ◽  
Vol 11 (6) ◽  
pp. 778 ◽  
Author(s):  
Tamaz Khunjua ◽  
Konstantin Klimenko ◽  
Roman Zhokhov
Keyword(s):  
Quark Matter ◽  
Charged Pion ◽  
Finite Size ◽  
Short Review ◽  
Heavy Ion ◽  
Quark Masses ◽  
Pion Condensation ◽  
Dense Quark Matter ◽  
Njl Model ◽  
Current Quark

In this short review we tried to give an outline of investigations of charged pion condensation (PC) in dense baryonic (quark) matter in the framework of effective Nambu–Jona-Lasinio (NJL)-type models. The possibility of charged PC phase in dense quark matter with isospin asymmetry is investigated. First, it is demonstrated that this phase can be realized in the framework of massless NJL model. However, the existence of this phase is enormously fragile to the values of current quark mass and we show that charged PC phase is forbidden in electrically neutral dense quark matter with β -equilibrium when current quark masses are close to their physical value of 5.5 MeV. Nevertheless, then it is shown that in real physical systems there could be conditions promoting the appearance of charged PC phenomenon in dense quark matter; specifically, it was shown that if one takes into consideration the fact that system can have finite size, then a dense charged PC phase can be realized there. It was also demonstrated that the possibility of inhomogeneous pion condensate might allow this phase to appear. In addition, more recently it was revealed that there is another interesting factor that can induce a charged PC phase in dense quark matter even without isospin imbalance. It is a chiral imbalance of the system (non-zero difference between densities of left- and right-handed quarks). These results can be interesting in heavy ion collision experiments, where it is expected to get high baryon densities. It is of interest also in the context of neutron stars, where quark matter might be realized in the core and very high baryon and isospin densities are attained.

scholarly journals Charged pion condensation in anti-parallel electromagnetic fields and nonzero isospin density

2020 ◽  
Vol 44 (3) ◽  
pp. 034105 ◽  
Author(s):  
Jingyi Chao ◽  
Mei Huang ◽  
Andrey Radzhabov
Keyword(s):  
Electromagnetic Fields ◽  
Charged Pion ◽  
Pion Condensation

scholarly journals Inhomogeneous charged pion condensation in chiral asymmetric dense quark matter in the framework of a NJL2 model

2017 ◽  
Vol 95 (10) ◽  
Author(s):  
T. G. Khunjua ◽  
K. G. Klimenko ◽  
R. N. Zhokhov ◽  
V. C. Zhukovsky
Keyword(s):  
Quark Matter ◽  
Charged Pion ◽  
Pion Condensation ◽  
Dense Quark Matter

scholarly journals PION CORRELATIONS IN NUCLEAR MATTER

2011 ◽  
Vol 20 (01) ◽  
pp. 63-80
Author(s):  
P. K. PANDA ◽  
J. DA PROVIDÊNCIA ◽  
S. SARANGI
Keyword(s):  
Nuclear Matter ◽  
Random Phase Approximation ◽  
Correlation Energy ◽  
Charged Pion ◽  
Random Phase ◽  
Neutron Matter ◽  
Generator Coordinate Method ◽  
Pion Condensation ◽  
Saturation Properties ◽  
Generator Coordinate

The saturation properties of the nuclear matter taking pion correlations into account are studied. We construct a Bogoliubov transformation for the pion pair operators and calculate the energy associated with the pion pairs. The pion dispersion relation is investigated. The correlation energy due to one-pion exchange in nuclear matter and neutron matter at random phase approximation using the generator coordinate method is also studied. The techniques of the charged pion correlations are discussed in the neutron matter calculations. We observe that there is no sign of the pion condensation in this model.

scholarly journals Electrical neutrality and $$\beta $$-equilibrium conditions in dense quark matter: generation of charged pion condensation by chiral imbalance

2020 ◽  
Vol 80 (10) ◽  
Author(s):  
T. G. Khunjua ◽  
K. G. Klimenko ◽  
R. N. Zhokhov
Keyword(s):  
Phase Diagram ◽  
Neutron Star ◽  
Quark Matter ◽  
Quark Mass ◽  
Charged Pion ◽  
Heavy Ion ◽  
Pion Condensation ◽  
Dense Quark Matter ◽  
Current Quark Mass ◽  
Current Quark

AbstractThe phase diagram of dense quark matter with chiral imbalance is considered with the conditions of electric neutrality and $$\beta $$ β -equilibrium. It has been shown recently that chiral imbalance can generate charged pion condensation (PC) in dense quark matter. It was, therefore, interesting to verify that this phenomenon takes place in realistic physical scenarios such as electrically neutral quark matter in $$\beta $$ β -equilibrium, because a window of charged PC at dense quark matter phase diagram (without chiral imbalance) predicted earlier was closed by the consideration of these conditions at the physical current quark mass. In this paper it has been shown that the charged PC phenomenon is generated by chiral imbalance in the dense electric neutral quark/baryonic matter in $$\beta $$ β -equilibrium, i.e. matter in neutron stars. It has also been demonstrated that charged PC is an inevitable phenomenon in dense quark matter with chiral imbalance if there is nonzero chiral imbalance in two forms, chiral and chiral isospin one. It seems that in this case charged PC phase can be hardly avoided by any physical constraint on isospin imbalance and that this conclusion can be probably generalized from neutron star matter to the matter produced in heavy ion collisions or in neutron star mergers. The chiral limit and the physical point (physical pion mass) have both been considered and it was shown that the appearance of charged PC is not much affected by the consideration of nonzero current quark mass.

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