scholarly journals Surface tension between a kaon condensate and the normal nuclear matter phase

2000 ◽  
Vol 62 (2) ◽  
Author(s):  
Michael B. Christiansen ◽  
Norman K. Glendenning ◽  
Jürgen Schaffner-Bielich
Keyword(s):  
Surface Tension ◽  
Nuclear Matter ◽  
Kaon Condensate ◽  
Matter Phase

scholarly journals Nuclear phase transition and thermodynamic instabilities in dense nuclear matter

2018 ◽  
Vol 182 ◽  
pp. 03007
Author(s):  
A. Lavagno
Keyword(s):  
Phase Transition ◽  
Nuclear Matter ◽  
Gas Phase ◽  
Degrees Of Freedom ◽  
Baryon Density ◽  
Hadronic Matter ◽  
Mechanical Instability ◽  
Dense Nuclear Matter ◽  
Nuclear Phase ◽  
Matter Phase

We study the presence of thermodynamic instabilities in a nuclear medium at finite temperature and density where nuclear phase transitions can take place. Such a phase transition is characterized by pure hadronic matter with both mechanical instability (fluctuations on the baryon density) that by chemical-diffusive instability (fluctuations on the electric charge concentration). Similarly to the liquid-gas phase transition, the nucleonic and the Δ-matter phase have a different isospin density in the mixed phase. In the liquid-gas phase transition, the process of producing a larger neutron excess in the gas phase is referred to as isospin fractionation. A similar effects can occur in the nucleon-Δ matter phase transition due essentially to a Δ- excess in the Δ-matter phase in asymmetric nuclear matter. In this context we also discuss the relevance of Δ-isobar and hyperon degrees of freedom in the bulk properties of the protoneutron stars at fixed entropy per baryon, in the presence and in the absence of trapped neutrinos.

Nuclear-matter—quark-matter phase diagram with strangeness

1989 ◽  
Vol 40 (1) ◽  
pp. 157-164 ◽  
Author(s):  
H. W. Barz ◽  
B. L. Friman ◽  
J. Knoll ◽  
H. Schulz
Keyword(s):  
Phase Diagram ◽  
Nuclear Matter ◽  
Quark Matter ◽  
Matter Phase

scholarly journals ISOSPIN LATTICE GAS MODEL AND NUCLEAR-MATTER PHASE DIAGRAM AND PRESSURE-VOLUME ISOTHERMS

1996 ◽  
Vol 05 (02) ◽  
pp. 303-311 ◽  
Author(s):  
T.T.S. KUO ◽  
S. RAY ◽  
J. SHAMANNA ◽  
R.K. SU
Keyword(s):  
Nuclear Matter ◽  
Lattice Gas ◽  
Nearest Neighbor ◽  
Mean Field ◽  
Field Approximation ◽  
Lattice Gas Model ◽  
Mean Field Approximation ◽  
Kinetic Energy Term ◽  
Phase Liquid ◽  
Matter Phase

We study a cubic lattice gas model for nuclear matter where each lattice site can be either occupied, by one proton or one neutron, or unoccupied. A nearest-neighbor interaction of the form - ∑<ij>Jijτziτzj is assumed. Our model is an isospin-1 Ising model, with τz= (1, 0, –1) representing respectively (proton, vacancy, neutron). A kinetic-energy term has been included in our model. Under the Bragg-Williams mean-field approximation our model exhibits the existence of a dense phase (liquid-like) and a rare phase (gas-like). The nuclear-matter p−v isotherms given by our model are discussed.

scholarly journals Hard-Core Radius of Nucleons within the Induced Surface Tension Approach

Universe ◽  
2019 ◽  
Vol 5 (2) ◽  
pp. 63 ◽  
Author(s):  
Kyrill Bugaev ◽  
Aleksei Ivanytskyi ◽  
Violetta Sagun ◽  
Boris Grinyuk ◽  
Denis Savchenko ◽  
...  
Keyword(s):  
Surface Tension ◽  
Nuclear Matter ◽  
Equations Of State ◽  
Hard Core ◽  
Blocking Effect ◽  
Composite Particles ◽  
Core Radius ◽  
Pauli Blocking ◽  
Novel Approach ◽  
Recent Approach

We review the recent approach to model the hadronic and nuclear matter equations of state using the induced surface tension concept, which allows one to go far beyond the usual Van der Waals approximation. Since the obtained equations of state, classical and quantum, are among the most successful ones in describing the properties of low density phases of strongly interacting matter, they set strong restrictions on the possible value of the hard-core radius of nucleons, which is widely used in phenomenological equations of state. We summarize the latest results obtained within this novel approach and perform a new detailed analysis of the hard-core radius of nucleons, which follows from hadronic and nuclear matter properties. Such an analysis allows us to find the most trustworthy range of its values: the hard-core radius of nucleons is 0.3–0.36 fm. A comparison with the phenomenology of neutron stars implies that the hard-core radius of nucleons has to be temperature and density dependent. Such a finding is supported when the eigenvolume of composite particles like hadrons originates from their fermionic substructure due to the Pauli blocking effect.

On a semi-experimentally determined nuclear matter phase diagram

1983 ◽  
Vol 313 (4) ◽  
pp. 369-370 ◽  
Author(s):  
H. Schulz ◽  
G. R�pke ◽  
M. Schmidt
Keyword(s):  
Phase Diagram ◽  
Nuclear Matter ◽  
Matter Phase

Collapse of Ring Diagrams and Nuclear-Matter Phase Transitions

1988 ◽  
Vol 61 (1) ◽  
pp. 38-41 ◽  
Author(s):  
M. F. Jiang ◽  
J. Heyer ◽  
S. D. Yang ◽  
T. T. S. Kuo
Keyword(s):  
Phase Transitions ◽  
Nuclear Matter ◽  
Matter Phase
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