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Related papers: Mixed phase effects on high-mass twin stars

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We investigate the robustness of third family solutions for hybrid compact stars with a quark matter core that correspond to the occurrence of high-mass twin stars against a softening of the phase transition by means of a construction that…

Nuclear Theory · Physics 2018-05-03 A. Ayriyan , N. -U. Bastian , D. Blaschke , H. Grigorian , K. Maslov , D. N. Voskresensky

The effect of pasta phases on the quark-hadron phase transition is investigated for a set of relativistic mean-field equations of state for both hadron and quark matter. The results of the full numerical solution with pasta phases are…

First-order phase transitions, like the liquid-gas transition, proceed via formation of structures such as bubbles and droplets. In strongly interacting compact star matter, at the crust-core transition, but also at the hadron-quark…

High Energy Astrophysical Phenomena · Physics 2018-09-17 Vahagn Abgaryan , David Alvarez-Castillo , Alexander Ayriyan , David Blaschke , Hovik Grigorian

In agreement with the gravitational-wave events which are constantly increasing, new aspects of the internal structure of compact stars have come to light. A scenario in which a first order transition takes place inside these stars is of…

High Energy Astrophysical Phenomena · Physics 2021-10-22 T. Deloudis , P. S. Koliogiannis , Ch. C. Moustakidis

We investigate the effects of the sharpness of the phase transition between hadronic matter and quark matter on various properties of neutron stars. We construct hybrid equations of state by combining a hadronic model with a quark model…

Nuclear Theory · Physics 2025-10-03 M. B. Albino , R. Fariello , G. Lugones , F. S. Navarra

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 investigate the properties of nuclear matter at the first-order phase transitions such as liquid-gas phase transition and hadron-quark phase transition. As a general feature of the first-order phase transitions of matter consisting of…

Nuclear Theory · Physics 2011-03-10 Toshiki Maruyama , Nobutoshi Yasutake , Toshitaka Tatsumi

We present a new method to interpolate between two matter phases that allows for a description of mixed phases and can be used, e.g., for mimicking transitions between pasta structures occuring in the crust as well as in the inner core of…

Nuclear Theory · Physics 2020-05-06 David Blaschke , David Alvarez-Castillo

We present a model for hybrid compact stars composed of a quark core and a hadronic mantle with an abrupt first order phase transition at the interface and in accordance with the latest astrophysical measurements of two 2 M_sun pulsars. We…

High Energy Astrophysical Phenomena · Physics 2013-11-19 D. E. Alvarez-Castillo , D. Blaschke

The observation and distinction of two compact stars with an identical mass but a different radius would be a clear sign of hadron-quark phase transition in nuclear matter. Motivated by studies searching for significant deviations in the…

Nuclear Theory · Physics 2023-06-21 P. Laskos-Patkos , Ch. C. Moustakidis

A class of hybrid compact star equations of state is investigated that joins by a Maxwell construction a low-density phase of hadronic matter, modeled by a relativistic meanfield approach with excluded nucleon volume, with a high-density…

High Energy Physics - Phenomenology · Physics 2019-03-20 D. E. Alvarez-Castillo , D. B. Blaschke , A. G. Grunfeld , V. P. Pagura

We study quark-hadron hybrid stars with sharp phase transitions assuming that phase conversions at the interface are slow. Hadronic matter is described by a set of equations of state (EoS) based on the chiral effective field theory and…

High Energy Astrophysical Phenomena · Physics 2020-10-13 Alessandro Parisi , C. Vásquez Flores , C. Henrique Lenzi , Chian-Shu Chen , Germán Lugones

We study the quark-hadron mixed phase in proto-neutron stars with the finite-size effects. In the calculations of pasta structures appeared in the mixed phase, the Gibbs conditions require the pressure balance and chemical equilibrium…

High Energy Astrophysical Phenomena · Physics 2015-05-20 Nobutoshi Yasutake , Toshiki Maruyama , Toshitaka Tatsumi

By assuming that ultra dense hybrid neutron stars are endowed with a distribution of electric charge, we study the corresponding twin star solutions and their properties resulting from a sharp first order transition from confined hadronic…

High Energy Physics - Phenomenology · Physics 2022-02-16 V. P. Goncalves , J. C. Jimenez , L. Lazzari

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

Explosive astrophysical systems, such as supernovae or compact star binary mergers, provide conditions where strange quark matter can appear. The high degree of isospin asymmetry and temperatures of several MeV in such systems may cause a…

High Energy Astrophysical Phenomena · Physics 2014-11-20 I. Sagert , T. Fischer , M. Hempel , G. Pagliara , J. Schaffner-Bielich , F. -K. Thielemann , M. Liebendörfer

Aims: We present a new microscopic hadron-quark hybrid equation of state model for astrophysical applications, from which compact hybrid star configurations are constructed. These are composed of a quark core and a hadronic shell with a…

High Energy Astrophysical Phenomena · Physics 2015-04-29 Sanjin Benic , David Blaschke , David E. Alvarez-Castillo , Tobias Fischer , Stefan Typel

We discuss the properties of the hadron-quark mixed phase in compact stars using a realistic equation of state of hyperonic matter and the MIT bag model. We find that the equation of state of the mixed phase is similar to that given by the…

Nuclear Theory · Physics 2008-11-26 Toshiki Maruyama , Satoshi Chiba , Hans-Josef Schulze , Toshitaka Tatsumi

We present two types of models for hybrid compact stars composed of a quark core and a hadronic mantle with an abrupt first order phase transition at the interface which are in accordance with the latest astrophysical measurements of two 2…

Nuclear Theory · Physics 2013-10-24 David Blaschke , David E. Alvarez-Castillo , Sanjin Benic

In this work, we consider the properties of compact stars in which quark matter has low- and high-density phases that are separated by a first-order phase transition. Thus, unlike the commonly considered case of a single phase transition…

High Energy Astrophysical Phenomena · Physics 2023-03-27 Jia Jie Li , Armen Sedrakian , Mark Alford
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