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On the basis of the percolation picture from the hadronic phase with hyperons to the quark phase with strangeness, we construct a new equation of state (EOS) with the pressure interpolated as a function of the baryon density. The maximum…

Nuclear Theory · Physics 2016-06-21 Kota Masuda , Tetsuo Hatsuda , Tatsuyuki Takatsuka

Using the idea of a smooth crossover from the hadronic matter with hyperons to quark matter with strangeness, we show that the maximum mass of neutron stars with quark matter core can be larger than those without quark matter core. This is…

Nuclear Theory · Physics 2015-06-05 Kota Masuda , Tetsuo Hatsuda , Tatsuyuki Takatsuka

We study the hadron-quark phase transition in the interior of neutron stars (NS). For the hadronic sector, we use a microscopic equation of state (EOS) involving nucleons and hyperons derived within the Brueckner-Hartree-Fock approach. For…

Nuclear Theory · Physics 2009-11-10 G. F. Burgio

How massive the hybrid stars could be is discussed by a "3-window model" proposed from a new strategy to construct the equation of state with hadron-quark transition. It is found that hybrid stars have a strong potentiality to generate a…

Nuclear Theory · Physics 2017-08-23 Tatsuyuki Takatsuka , Tetsuo Hatsuda , Kota Masuda

We describe charge-neutral neutron star matter in $\beta-$equilibrium using hybrid equations of state, where a first-order phase transition from hadronic to quark matter is realized. The hadronic matter is described in a model-independent…

Nuclear Theory · Physics 2020-07-21 Márcio Ferreira , Renan Câmara Pereira , Constança Providência

Massive neutron stars (NS) are expected to possess a quark core. While the hadronic side of the NS equation of state (EOS) can be considered well established, the quark side is quite uncertain. While calculating the EOS of hadronic matter…

Astrophysics · Physics 2009-11-07 G. F. Burgio , M. Baldo , P. K. Sahu , A. B. Santra , H. -J. Schulze

The transition to quark matter can take place in neutron stars. The structure of a hybrid star, containing a core made of quark matter is discussed. The maximum mass of the non-rotating hybrid star turns out to be 1.6 M_s. Possible…

Astrophysics · Physics 2009-10-31 Alessandro Drago

We investigate binary neutron star (BNS) mergers using general-relativistic numerical simulations with hadronic and hybrid equations of state (EOSs), incorporating the latest observations and theoretical constraints. We address two viable…

High Energy Astrophysical Phenomena · Physics 2025-09-16 Sudipta Hensh , Yong-Jia Huang , Toru Kojo , Luca Baiotti , Kentaro Takami , Shigehiro Nagataki , Hajime Sotani

Bulk properties of cold and hot neutron stars (NSs) are studied on the basis of the hadron-quark crossover picture where a smooth transition from the hadronic phase to the quark phase takes place at finite baryon density. By using a…

Nuclear Theory · Physics 2016-04-20 Kota Masuda , Tetsuo Hatsuda , Tatsuyuki Takatsuka

We investigate the possible scenario of deconfinement of hyperon rich hadronic matter to quark matter at high densities and the resulting hybrid star (HS) properties are analyzed. In the relativistic mean-field framework, we construct the…

Nuclear Theory · Physics 2018-12-14 Debashree Sen , T. K. Jha

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

Using a quantum hadrodynamics (QHD) and MIT based models we construct hybrid stars within the Maxwell criteria of hadron-quark phase transition. We are able to produce a hybrid star with maximum mass of 2.15$M_\odot$. Furthermore, a…

High Energy Physics - Phenomenology · Physics 2022-03-30 Luiz L. Lopes , Carline Biesdorf , Débora P. Menezes

We study the hadron-quark phase transition in the interior of neutron stars (NS's). We calculate the equation of state (EOS) of hadronic matter using the Brueckner-Bethe-Goldstone formalism with realistic two-body and three-body forces, as…

Nuclear Theory · Physics 2009-11-07 G. F. Burgio , M. Baldo , H. -J. Schulze , P. K. Sahu

The question of whether quark matter exists in neutron stars is a long standing one. Generally one finds that a first order phase transition from baryons to quarks softens the equation of state so much that the star would collapse into a…

Nuclear Theory · Physics 2021-07-14 J. I. Kapusta , T. Welle

We study the hadron-quark phase transition in the interior of neutron stars (NS). For the hadronic sector, we use a microscopic equation of state (EOS) involving nucleons and hyperons derived within the Brueckner-Bethe-Goldstone many-body…

Nuclear Theory · Physics 2009-11-10 C. Maieron , M. Baldo , G. F. Burgio , H. -J. Schulze

Based on the density-dependent relativistic Hartree-Fock theory (DDRHF) for hadronic matter, the properties of neutron stars have been studied and compared with the results from the density-dependent relativistic mean field theory (DDRMF).…

Nuclear Theory · Physics 2009-10-22 Bao Yuan Sun , U. Lombardo , F. Burgio , Jie Meng

Hadron-quark phase transition in neutron star cores is achieved in the present work with the help of Maxwell construction. For the purpose we employ six different and well-known hadronic models for the pure hadronic phase. The quark phase…

Nuclear Theory · Physics 2022-10-18 Debashree Sen , Naosad Alam , Gargi Chaudhuri

Using the most recent realistic effective interactions for nuclear matter with a smooth extrapolation to high densities including causality, we constrain the equation of state and calculate maximum masses of rotating neutron stars. First…

Astrophysics · Physics 2009-10-31 H. Heiselberg , M. Hjorth-Jensen

Neutron stars (NSs) are interesting objects capable of reaching densities unattainable on Earth. The properties of matter under these conditions remain a mystery. Exotic matter, including quark matter, may be present in the NS core. In this…

Nuclear Theory · Physics 2026-02-20 Milena Albino , Tuhin Malik , Márcio Ferreira , Constança Providência

The properties of the neutron stars are calculated for the hadronic matter within the density-dependent relativistic mean-field model (DD-RMF). The phase transition to the quark matter is studied and the hybrid star matter properties are…

Nuclear Theory · Physics 2021-09-09 I. A. Rather , A. A. Usmani , S. K. Patra
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