Influence of vector interactions on the hadron-quark/gluon phase transition

Shao, Guo-yun; Colonna, M.; Toro, M. Di; Liu, B.; Matera, F.

doi:10.1103/physrevd.85.114017

Cited by 34 publications

(38 citation statements)

References 72 publications

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“…nuclear matter to quark matter in the two-phase model related to experiments in heavy-ion collisions [46]. New data about properties of a mixed phase eventually probed in high density regions will provide important information on the strength of the isoscalar-vector term in the quark interaction.…”

Section: Numerical Results and Discussionmentioning

confidence: 99%

“…• This channel interaction can be derived from higher order Fock (exchange) terms or Fierz transformations or fitting the vector meson spectrum [46].…”

Section: Numerical Results and Discussionmentioning

confidence: 99%

“…Aim of the present work is just to get some relevant information from neutron star properties. We notice that suggestions to catch information on the isoscalar vector interaction may also come from heavy ion reactions at next-generation colliders, such as NICA and FAIR [46]. A combined study of the two aspects appears as a promising tool to get hints on the strength of R V .…”

Section: A the Hadronic Modelmentioning

confidence: 97%

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Isoscalar-vector interaction and hybrid quark core in massive neutron stars

et al. 2013

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The hadron-quark phase transition in the core of massive neutron stars is studied with a newly constructed two-phase model. For nuclear matter, a nonlinear Walecka type model with general nucleon-meson and meson-meson couplings, recently calibrated by Steiner, Hemper and Fischer, is taken. For quark matter, a modified Polyakov-Nambu-Jona-Lasinio (mPNJL) model, which gives consistent results with lattice QCD data, is used. Most importantly, we introduce an isoscalar-vector interaction in the description of quark matter, and we study its influence on the hadron-quark phase transition in the interior of massive neutron stars. With the constraints of neutron star observations, our calculation shows that the isoscalar-vector interaction between quarks is indispensable if massive hybrids star exist in the universe, and its strength determines the onset density of quark matter, as well as the mass-radius relations of hybrid stars. Furthermore, as a connection with heavy-ioncollision experiments we give some discussions about the strength of isoscalar-vector interaction and its effect on the signals of hadron-quark phase transition in heavy-ion collisions, in the energy range of the NICA at JINR-Dubna and FAIR at GSI-Darmstadt facilities.

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Section: Numerical Results and Discussionmentioning

confidence: 99%

“…• This channel interaction can be derived from higher order Fock (exchange) terms or Fierz transformations or fitting the vector meson spectrum [46].…”

Section: Numerical Results and Discussionmentioning

confidence: 99%

Section: A the Hadronic Modelmentioning

confidence: 97%

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Isoscalar-vector interaction and hybrid quark core in massive neutron stars

et al. 2013

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“…We have checked that even with isovector terms in the PNJL lagrangian, the effect is still there although a little reduced [26]. In any case the strength of the couplings in the QCD effective lagrangian is completely unknown and also for this reason experiments at NICA appear very relevant.…”

Section: Isospin Distillation and Isospin Trappingmentioning

confidence: 95%

“…It appears natural to further investigate the role of vector interactions in the quark effective models [26,27]. We remind that in nuclear matter the vector interactions lead to fundamental properties, like the saturation point and the symmetry energy in isospin asymmetric systems.…”

Section: Vector Quark Interactions and Existence Of Hybrid Neutron Starsmentioning

confidence: 99%

Probing the hadron-quark mixed phase at high isospin and baryon density

et al. 2016

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We like to dedicate this work to the memory of Prof. Liu Bo, of the Institute for High Energy Physics (IHEP) of Beijing, suddenly passed away few months ago, for his continuous interest in the project and for the important contributions.Abstract. We discuss the isospin effect on the possible phase transition from hadronic to quark matter at high baryon density and finite temperatures. The two-Equation of State (Two-EoS) model is adopted to describe the hadron-quark phase transition in dense matter formed in heavy-ion collisions. For the hadron sector we use Relativistic Mean Field (RMF) effective models, already tested on heavy ion collision (HIC). For the quark phase we consider various effective models, the MITBag static picture, the Nambu-Jona-Lasinio (NJL) approach with chiral dynamics and finally the NJL coupled to the Polyakov-loop field (PNJL), which includes both chiral and (de)confinement dynamics. The idea is to extract mixed phase properties which appear robust with respect to the model differences. In particular we focus on the phase transitions of isospin asymmetric matter, with two main results: i) an earlier transition to a mixed hadron-quark phase, at lower baryon density/chemical potential with respect to symmetric matter; ii) an "Isospin Distillation" to the quark component of the mixed phase, with predicted effects on the final hadron production. Possible observation signals are suggested to probe in heavy-ion collision experiments at intermediate energies, in the range of the NICA program. MotivationsIn heavy ion collisions at intermediate beam energies in the AGeV range, rather high density regions can be reached, opening the possibility for new degrees of freedom to come into play. This kind of collisions is usually described for hadronic matter within relativistic mean-field(RMF) models and transport theories [1]. Here we want to show that in neutron-rich systems the transition from the nuclear (hadron) to the quark deconfined (quark-gluon plasma) phase could take place even at density and temperature conditions reached along collision dynamics in the intermediate energy range. Such transition in very isospin asymmetric matter is also of large interest in the study of neutron stars (in the following we in short talk of "asymmetric matter").Hadronic matter is expected to undergo a phase transition to a deconfined phase of quarks and gluons at large densities and/or high temperatures. On very general grounds, Correspondence to: ditoro@lns.infn.it the critical densities of the transition should be dependent on the isospin of the system, but no experimental tests of this dependence have been performed so far. Moreover, up to now, data on the phase transition have been extracted from ultrarelativistic collisions, when large temperatures but low baryon densities are reached.In order to check the possibility of observing some precursor signals of new physics even in collisions of stable nuclei at intermediate energies we have performed event simulations for the collision of very heavy, neutron-ri...

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Symmetry energy of strange quark matter and tidal deformability of strange quark stars

Xia

Lù

et al. 2022

NUCL SCI TECH

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Influence of vector interactions on the hadron-quark/gluon phase transition

Cited by 34 publications

References 72 publications

Isoscalar-vector interaction and hybrid quark core in massive neutron stars

Isoscalar-vector interaction and hybrid quark core in massive neutron stars

Probing the hadron-quark mixed phase at high isospin and baryon density

Symmetry energy of strange quark matter and tidal deformability of strange quark stars

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