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Starting from the relativistic Brueckner-Hartree-Fock theory for nuclear matter and the Dyson-Schwinger equation approach for quark matter, the possible hadron-quark phase transition in the interior of a neutron star is explored. The…

Nuclear Theory · Physics 2023-05-16 Pianpian Qin , Zhan Bai , Sibo Wang , Chencan Wang , Si-xue Qin

We report the effects of quark-hadron phase transition on the structures of general relativistic stars with purely toroidal magnetic field. For the mixed phase, we take into account of the finite-size effects, which lead to non-uniform…

High Energy Astrophysical Phenomena · Physics 2009-11-24 Nobutoshi Yasutake , Toshiki Maruyama , Toshitaka Tatsumi , Kenta Kiuchi , Kei Kotake

We study the finite-size effects, like the surface and Coulomb energies, on the hadron-quark mixed phase in neutron stars. The equilibrium conditions for coexisting hadronic and quark phases are derived by minimizing the total energy…

Nuclear Theory · Physics 2017-09-13 Xuhao Wu , Hong Shen

The structured hadron-quark mixed phase, known as the pasta phase, is expected to appear in the core of massive neutron stars. Motivated by the recent advances in astrophysical observations, we explore the possibility of the appearance of…

Nuclear Theory · Physics 2022-01-05 Min Ju , Jinniu Hu , Hong Shen

Non-uniform structures of mixed phases at the first-order phase transition to charged kaon condensation are studied using a density functional theory within the relativistic mean field model. Including electric field effects and applying…

Properties of hybrid stars with a mixed phase composed of asymmetric nuclear matter and strange quark matter are studied. The quark phase is investigated by the quark quasiparticle model with a self-consistent thermodynamic and statistical…

Nuclear Theory · Physics 2013-05-31 Xin-Jian Wen

We compute the bulk viscosity of a mixed quark-hadron phase. In the first scenario to be discussed, the mixed phase occurs at large densities and we assume that it is composed of a mixing of hyperonic matter and quarks in the Color Flavor…

Astrophysics · Physics 2008-11-26 A. Drago , A. Lavagno , G. Pagliara

We investigate systematically the quark-hadron mixed phase in dense stellar matter, and its influence on compact star structures. The properties of quark matter and hadronic matter are fixed based on various model predictions. Beside…

High Energy Physics - Phenomenology · Physics 2020-07-29 Cheng-Jun Xia , Toshiki Maruyama , Nobutoshi Yasutake , Toshitaka Tatsumi , Hong Shen , Hajime Togashi

Quantum Chromodynamics predicts phase transition from hadronic matter to quark matter at high density, which is highly probable in astrophysical systems like binary neutron star mergers. To explore the critical density where such phase…

High Energy Astrophysical Phenomena · Physics 2024-01-11 Shamim Haque , Ritam Mallick , Shashikesh Kumar Thakur

The phase transition from hadronic matter to quark matter at high density might be a strong first order phase transition in presence of a large surface tension between the two phases. While this implies a constant-pressure mixed phase for…

High Energy Astrophysical Phenomena · Physics 2009-10-29 G. Pagliara , M. Hempel , J. Schaffner-Bielich

A thorough knowledge of the quark-hadron phase transition in hot and dense matter is essential for constraining the equation of state of neutron stars. In this work, we study the thermodynamics of the quark-hadron mixed phase at finite…

Nuclear Theory · Physics 2026-05-07 Suman Pal , Gargi Chaudhuri

Quest for a new form of matter inside compact stars compels us to examine the thermodynamical properties of the phase transitions. We closely consider the first-order phase transitions and the phase equilibrium on the basis of the Gibbs…

Nuclear Theory · Physics 2011-07-13 Toshitaka Tatsumi , Nobutoshi Yasutake , Toshiki Maruyama

We study the effects of the gapless color-flavor locked (gCFL) phase on the equation of state of strongly interacting matter in the range of baryonic chemical potential involved in a compact star. We analyze the possibility of a phase…

Nuclear Theory · Physics 2009-11-11 A. Lavagno , G. Pagliara

We investigate the influence of spatially inhomogeneous chiral symmetry-breaking condensates in a magnetic field background on the equation of state for compact stellar objects. After building a hybrid star composed of nuclear and quark…

Nuclear Theory · Physics 2015-11-18 S. Carignano , E. J. Ferrer , V. de la Incera , L. Paulucci

We investigate the influence of repulsive vector interactions and color superconductivity on the structure of neutron stars using an extended version of the field correlator method (FCM) for the description of quark matter. The hybrid…

We investigate the influence of medium effects on the structure of hybrid stars, i.e. neutron stars possessing a quark matter core. We found that medium effects reduce the extent of a pure quark matter phase in the interior of a hybrid star…

Astrophysics · Physics 2009-10-30 K. Schertler , C. Greiner , P. K. Sahu , M. H. Thoma

Using a three-flavor Nambu--Jona-Lasinio model to describe the charge-parity violating effects through axion field, we investigate the axion effects on quark matter and quark-matter cores in massive hybrid stars. The properties of quark…

Nuclear Theory · Physics 2025-03-11 He Liu , Yu-Heng Liu , Yong-Hang Yang , Min Ju , Xu-Hao Wu , Hong-Ming Liu , Peng-Cheng Chu

In this work, we discuss the deconfinement phase transition to quark matter in hot/dense matter. We {examine} the effect that different charge fractions, isospin fractions, net strangeness, and chemical equilibrium with respect to leptons…

We study the effects of strangeness on the quark sector of a hybrid star equation of state. Since the model we use to describe quarks is the same as the one we use to describe hadrons, we can also study the effects of strangeness on the…

High Energy Astrophysical Phenomena · Physics 2015-05-25 V. Dexheimer , R. Negreiros , S. Schramm

We present a multi-polytrope approach to describe high-mass twins fulfilling chiral effective field theory estimations of the neutron star equation state and test it against the appearance of mixed phases at the hadron-quark interface. In…

Nuclear Theory · Physics 2017-12-27 David Alvarez-Castillo , David Blaschke , Stefan Typel