Pion pair condensed nuclear matter without a σ meson

2009 ◽  
Vol 80 (1) ◽  
Author(s):  
Hirokazu Tezuka
Keyword(s):  
Nuclear Matter ◽  
Pion Pair

INFLUENCE OF THE PARTICLE-HOLE CONTINUUM ON PION-PION CORRELATIONS IN DENSE NUCLEAR MATTER

1993 ◽  
Vol 08 (15) ◽  
pp. 1379-1385 ◽  
Author(s):  
Z. AOUISSAT ◽  
G. CHANFRAY ◽  
P. SCHUCK
Keyword(s):  
Nuclear Matter ◽  
Phase Shifts ◽  
Strength Distribution ◽  
Pion Pair ◽  
Pion Condensation ◽  
Dense Nuclear Matter

In dense nuclear matter the coupling of the pion to the particle-hole states shifts the two-pion strength below threshold. In the scalar-isoscalar channel the π+π− strength distribution can develop a resonance-like structure at energies between zero and 2mπ. Using a phenomenological force fitting phase shifts, we show that dense nuclear matter can become unstable with respect to formation of a pion-pair condensate. This phenomenon may precede single pion condensation.

TEMPERATURE DEPENDENCE OF THE EFFECTIVE INTERACTION IN NUCLEAR MATTER

1987 ◽  
Vol 48 (C2) ◽  
pp. C2-301-C2-304
Author(s):  
M. BALDO ◽  
G. GIANSIRACUSA ◽  
U. LOMBARDO
Keyword(s):  
Nuclear Matter ◽  
Temperature Dependence ◽  
Effective Interaction

Onset Transition to Cold Nuclear Matter from Lattice QCD with Heavy Quarks

2014 ◽  
Author(s):  
Mathias Neuman ◽  
Jens Langelage ◽  
Owe Philipsen
Keyword(s):  
Nuclear Matter ◽  
Lattice Qcd ◽  
Heavy Quarks ◽  
Cold Nuclear Matter

Thermal effects in hot and dilute homogeneous asymmetric nuclear matter

2021 ◽  
Vol 103 (5) ◽  
Author(s):  
Vishal Parmar ◽  
Manoj K. Sharma ◽  
S. K. Patra
Keyword(s):  
Nuclear Matter ◽  
Thermal Effects ◽  
Asymmetric Nuclear Matter

scholarly journals Topology change, emergent symmetries and compact star matter

2021 ◽  
Vol 31 (1) ◽  
Author(s):  
Yong-Liang Ma ◽  
Mannque Rho
Keyword(s):  
Nuclear Matter ◽  
Compact Star ◽  
Momentum Tensor ◽  
Effective Field ◽  
Compact Stars ◽  
Strongly Correlated ◽  
Topology Change ◽  
Dense Nuclear Matter ◽  
Skyrmion Matter ◽  
Energy Constants

AbstractTopology effects have being extensively studied and confirmed in strongly correlated condensed matter physics. In the limit of large number of colors, baryons can be regarded as topological objects—skyrmions—and the baryonic matter can be regarded as a skyrmion matter. We review in this paper the generalized effective field theory for dense compact-star matter constructed with the robust inputs obtained from the skyrmion approach to dense nuclear matter, relying on possible “emergent” scale and local flavor symmetries at high density. All nuclear matter properties from the saturation density n0 up to several times n0 can be fairly well described. A uniquely novel—and unorthdox—feature of this theory is the precocious appearance of the pseudo-conformal sound velocity $v^{2}_{s}/c^{2} \approx 1/3$ v s 2 / c 2 ≈ 1 / 3 , with the non-vanishing trace of the energy momentum tensor of the system. The topology change encoded in the density scaling of low energy constants is interpreted as the quark-hadron continuity in the sense of Cheshire Cat Principle (CCP) at density $\gtrsim 2n_{0}$ ≳ 2 n 0 in accessing massive compact stars. We confront the approach with the data from GW170817 and GW190425.

scholarly journals η mesons in hot and dense asymmetric nuclear matter

2020 ◽  
Vol 102 (6) ◽  
Author(s):  
Rajesh Kumar ◽  
Arvind Kumar
Keyword(s):  
Nuclear Matter ◽  
Asymmetric Nuclear Matter
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