Excluded-volume model for quarkyonic matter: Three-flavor baryon-quark mixture

Duarte, Dyana C.; Hernández-Ortíz, Saúl; Jeong, Kie Sang

doi:10.1103/physrevc.102.025203

Cited by 54 publications

(37 citation statements)

References 59 publications

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“…Recently, a simple model of (chirally broken) quarkyonic matter was proposed [11], based on the picture of a Fermi sea filled by quarks surrounded by a baryon layer. This model has been extended and applied to the physics of neutron stars [12][13][14][15].…”

Section: Jhep09(2020)112mentioning

confidence: 99%

Holographic quarkyonic matter

Kovensky

Schmitt

2020

J. High Energ. Phys.

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We point out a new configuration in the Witten-Sakai-Sugimoto model, allowing baryons in the pointlike approximation to coexist with fundamental quarks. The resulting phase is a holographic realization of quarkyonic matter, which is predicted to occur in QCD at a large number of colors, and possibly plays a role in real-world QCD as well. We find that holographic quarkyonic matter is chirally symmetric and that, for large baryon chemical potentials, it is energetically preferred over pure nuclear matter and over pure quark matter. The zero-temperature transition from nuclear matter to the quarkyonic phase is of first order in the chiral limit and for a realistic pion mass. For pion masses far beyond the physical point we observe a quark-hadron continuity due to the presence of quarkyonic matter.

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Section: Jhep09(2020)112mentioning

confidence: 99%

Holographic quarkyonic matter

Kovensky

Schmitt

2020

J. High Energ. Phys.

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“…Similarly, to make more realistic models of quarkyonic matter one also needs to incorporate strange quarks as degrees of freedom in the quark sector. Some previous work [34,35] have explored strange quark matter and beta equilibrium within the context of excluded volume quarkyonic matter. However, there are quite a few differences between the approach followed in this paper and in [34,35].…”

Section: Discussionmentioning

confidence: 99%

“…Some previous work [34,35] have explored strange quark matter and beta equilibrium within the context of excluded volume quarkyonic matter. However, there are quite a few differences between the approach followed in this paper and in [34,35]. For example, [34,35] incorporate a density independent regulator for the quark density of states which gives rise to quarks at relatively low baryon density.…”

Section: Discussionmentioning

confidence: 99%

“…However, there are quite a few differences between the approach followed in this paper and in [34,35]. For example, [34,35] incorporate a density independent regulator for the quark density of states which gives rise to quarks at relatively low baryon density. Also, [35] uses the Maxwell construction to describe low density properties of nuclear matter while implementing an interpolation procedure to smoothly connect low density and high density regimes of quarkyonic matter.…”

Section: Discussionmentioning

confidence: 99%

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Finite-temperature quarkyonic matter with an excluded volume model

Sen

Warrington

2021

Nuclear Physics A

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Inspired by the excluded volume model for isospin symmetric quarkyonic matter [1], we construct an 'excluded volume' model for a charge neutral quarkyonic phase whose hadronic sector contains only neutrons. We refer to this model as quarkyonic neutron matter. We compute the equation of state for this model and solve the Tolman-Oppenhermer-Volkoff equations to obtain mass and radius relations relevant for neutron stars. The most straightforward extension of the model for symmetric quarkyonic matter [1] to quarkyonic neutron matter does not satisfy the mass radius constraints from neutron star measurements. However, we show that by incorporating appropriate nuclear interactions in the excluded volume model one can produce mass-radius relations that lie within the constraints obtained from gravitational waves of binary neutron star mergers and maximum mass measurements of neutron stars.

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“…[14]. Recently, there has been increasing interest to explore the possible existence of quarkyonic matter inside compact stars or in heavy ion collisions, and the relevant consequences for astrophysical and experimental observations [15][16][17][18][19][20][21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

A field theoretical model for quarkyonic matter

Cao

Liao

2020

J. High Energ. Phys.

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The possibility that nuclear matter at a density relevant to the interior of massive neutron stars may be a quarkynoic matter has attracted considerable recent interest. In this work, we construct a phenomenological model to describe the quarkyonic matter, that would allow quantitative calculations of its various properties within a well-defined field theoretical framework. This is implemented by synthesizing the Walecka model together with the quark-meson model, where both quark and nucleon degrees of freedom are present based on the quarkyonic scenario. With this model we compute at mean-field level the thermodynamic properties of the symmetric nuclear matter and calibrate model parameters through well-known nuclear physics measurements. We find this model gives a very good description of the symmetric nuclear matter from moderate to high baryon density and demonstrates a continuous transition from nucleon-dominance to quark-dominance for the system.

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Excluded-volume model for quarkyonic matter: Three-flavor baryon-quark mixture

Cited by 54 publications

References 59 publications

Holographic quarkyonic matter

Holographic quarkyonic matter

Finite-temperature quarkyonic matter with an excluded volume model

A field theoretical model for quarkyonic matter

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