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We incorporate the empirical low-density properties of isospin symmetric nuclear matter into the excluded-volume model for quarkyonic matter by including attractive mean field in the nucleonic sector and considering variations on the…

Nuclear Theory · Physics 2023-07-26 Roman V. Poberezhnyuk , Horst Stoecker , Volodymyr Vovchenko

We consider Quarkyonic Matter to naturally explain the observed properties of neutron stars. We argue that such matter might exist at densities close to that of nuclear matter and at the onset, the pressure and the sound velocity in…

Nuclear Theory · Physics 2019-04-03 Larry McLerran , Sanjay Reddy

Employing constraints derived from the microscopic theory of the strong interaction, we estimate the zero-temperature phase structure of dense isospin-asymmetric matter with two quark flavors. We find indications that strong-interaction…

Nuclear Theory · Physics 2022-09-16 Jens Braun , Benedikt Schallmo

This work extends our previous study of isospin symmetric quarkyonic matter to quarkyonic neutron matter which might be relevant to the inner cores of neutron stars. The vector-isovector $\rho$ mesons are introduced to the model mainly to…

Nuclear Theory · Physics 2022-06-17 Gaoqing Cao

The interior of neutron stars contains matter at the highest densities realized in our Universe. Interestingly, theoretical studies of dense matter, in combination with the existence of two solar mass neutron stars, indicate that the speed…

The symmetry energy characterizes the isospin dependent part of the equation of state of isospin asymmetric strong interaction matter and it plays a critical role in many issues of nuclear physics and astrophysics. In this talk, we briefly…

Nuclear Theory · Physics 2017-08-16 Lie-Wen Chen

We investigate quarkyonic matter within a relativistic quark model by combining the dual quarkyonic picture with the quark-meson coupling (QMC) model. Using relativistic gaussian quark wavefunctions for the nucleon, we construct the…

Nuclear Theory · Physics 2026-03-27 Tsuyoshi Miyatsu , Myung-Ki Cheoun , Koichi Saito

The concept of quarkyonic matter presents a promising alternative to the conventional models used to describe high-density matter and provides a more nuanced and detailed understanding of the properties of matter under extreme conditions…

Nuclear Theory · Physics 2023-09-19 Ankit Kumar , Debabrata Dey , Shamim Haque , Ritam Mallick , S. K. Patra

Quark matter may appear due to a hadronic-quark transition in the core of a hybrid star. Quarkyonic matter is an approach in which both quarks and nucleons appear as quasi-particles in a crossover transition, and provides an explicit…

High Energy Astrophysical Phenomena · Physics 2020-07-22 Tianqi Zhao , James M. Lattimer

The possibility that nuclear matter might be Quarkyonic is considered. Quarkyonic matter is high baryon density matter that is confined but can be approximately thought of as a filled Fermi sea of quarks surrounded by a shell of nucleons.…

Nuclear Theory · Physics 2024-08-14 Volker Koch , Larry McLerran , Gerald A. Miller , Volodymyr Vovchenko

A recently proposed density-dependent van der Waals model, with only $4$ free parameters adjusted to fix binding energy, saturation density, symmetry energy, and incompressibility, is analyzed under symmetric and asymmetric nuclear matter…

Nuclear Theory · Physics 2020-02-07 M. Dutra , B. M. Santos , O. Lourenço

Inspired by the excluded volume model for isospin symmetric quarkyonic matter, 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…

High Energy Astrophysical Phenomena · Physics 2021-09-01 Srimoyee Sen , Lars Sivertsen

The density dependence of nuclear symmetry energy is determined from a systematic study of the isospin dependent bulk properties of asymmetric nuclear matter using the isoscalar and the isovector components of density dependent M3Y…

Nuclear Theory · Physics 2009-08-07 P. Roy Chowdhury , D. N. Basu , C. Samanta

We suggest an extension to isospin asymmetric matter of the quarkyonic model from McLerran and Reddy. This extension allows us to construct the $\beta$-equilibrium between quarks, nucleons and leptons. The concept of the quarkyonic matter…

Nuclear Theory · Physics 2021-11-24 J. Margueron , H. Hansen , P. Proust , G. Chanfray

We unite the dual quarkyonic model with the quark-meson coupling (QMC) model to construct a novel nuclear model based on the quark degrees of freedom, which can cover a wide range of nuclear density from low density to the crossover region.…

Nuclear Theory · Physics 2025-12-05 Koichi Saito , Tsuyoshi Miyatsu , Myung-Ki Cheoun

The existence of quark matter inside the heaviest neutron stars has been the topic of numerous recent studies, many of them suggesting that a phase transition to strongly interacting conformal matter inside neutron stars is feasible. Here…

High Energy Astrophysical Phenomena · Physics 2023-08-04 János Takátsy , Péter Kovács , György Wolf , Jürgen Schaffner-Bielich

We make use of isospin constraints to study the parametric coupling model and the properties of asymmetric nuclear matter. Besides the usual constraints for nuclear matter - effective nucleon mass and the incompressibility at saturation…

The high-density behavior of nuclear matter is analyzed within a relativistic mean-field description with non-linear meson interactions. To assess the model parameters and their output, a Bayesian inference technique is used. The Bayesian…

Nuclear Theory · Physics 2023-06-09 Tuhin Malik , Márcio Ferreira , Milena Bastos Albino , Constança Providência

The observation of maximally rotating neutron stars (in comparison to nonrotating ones) may provide more information on the behavior of nuclear matter at high densities. We provide a theoretical treatment concerning the effects of the upper…

Nuclear Theory · Physics 2020-03-03 Ch. Margaritis , P. S. Koliogiannis , Ch. C. Moustakidis

In this paper, we employ the Density Dependent Relativistic Hadron (DDRH) field theoretical Model in a Bayesian analysis to investigate the equation of state (EOS) of dense matter featuring antikaon condensation for $K^-$ and $\bar{K}^0$…

High Energy Astrophysical Phenomena · Physics 2024-10-18 Vishal Parmar , Vivek Baruah Thapa , Anil Kumar , Debades Bandyopadhyay , Monika Sinha
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