The chiral phase transition at high baryon density from nonperturbative flow equations

2000 ◽  
Vol 13 (2) ◽  
pp. 323 ◽  
Author(s):  
J. Berges ◽  
D.-U. Jungnickel ◽  
C. Wetterich
Keyword(s):  
Phase Transition ◽  
Baryon Density ◽  
Chiral Phase ◽  
Chiral Phase Transition ◽  
Flow Equations

scholarly journals Parity Doubling and the Dense-Matter Phase Diagram under Constraints from Multi-Messenger Astronomy

Universe ◽  
2019 ◽  
Vol 5 (8) ◽  
pp. 180 ◽  
Author(s):  
Michał Marczenko ◽  
David Blaschke ◽  
Krzysztof Redlich ◽  
Chihiro Sasaki
Keyword(s):  
Phase Transition ◽  
Phase Diagram ◽  
Low Temperature ◽  
Compact Star ◽  
Dense Matter ◽  
Mass Splitting ◽  
Baryon Density ◽  
Chiral Phase ◽  
Chiral Phase Transition ◽  
Characteristic Features

We extend the recently developed hybrid quark–meson–nucleon model by augmenting a six-point scalar interaction and investigate the consequences for neutron-star sequences in the mass–radius diagram. One of the characteristic features of the model is that the chiral symmetry is restored within the hadronic phase by lifting the mass splitting between chiral partner states, before quark deconfinement takes place. At low temperature and finite baryon density, the model predicts a first- or second-order chiral phase transition, or a crossover, depending on the expectation value of a scalar field, and a first-order deconfinement phase transition. We discuss two sets of free parameters, which result in compact-star mass–radius relations that are at tension with the combined constraints for maximum-mass ( 2 M ⊙ ) and the compactness (GW170817). We find that the most preferable mass–radius relations result in isospin-symmetric phase diagram with rather low temperature for the critical point of the chiral phase transition.

scholarly journals Fluctuations and thermodynamic geometry of the chiral phase transition

2020 ◽  
Vol 102 (11) ◽  
Author(s):  
Paolo Castorina ◽  
Daniele Lanteri ◽  
Marco Ruggieri
Keyword(s):  
Phase Transition ◽  
Chiral Phase ◽  
Chiral Phase Transition ◽  
Thermodynamic Geometry

scholarly journals Screening masses close to the chiral phase transition

1994 ◽  
Vol 34 ◽  
pp. 289-291
Author(s):  
G. Boyd ◽  
S. Gupta ◽  
F. Karsch ◽  
E. Laermann
Keyword(s):  
Phase Transition ◽  
Chiral Phase ◽  
Chiral Phase Transition
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