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The strangeness contribution to the nucleon magnetic moment is calculated at the one-loop level in a relativistic SU(3) chiral potential model and is found to be {\em positive}, that is, with an {\em opposite} sign to the nucleon…

High Energy Physics - Phenomenology · Physics 2007-05-23 X. B. Chen , X. S. Chen , Amand Faessler , Th. Gutsche , F. Wang

We present an analytic and parameter-free expression for the momentum dependence of the strange magnetic form factor of the nucleon and its corresponding radius which has been derived in Heavy Baryon Chiral Perturbation Theory. We also…

High Energy Physics - Phenomenology · Physics 2007-05-23 Thomas R. Hemmert , Ulf-G. Meissner , Sven Steininger

Motivated by recent suggestions that strange stars can be responsible for glitches and other observational features of pulsar, we review some possible equations of state and their implications for models of neutron, hybrid and strange…

Astrophysics · Physics 2009-11-11 D. P. Menezes , D. B. Melrose

In this paper, we construct a viable strange star model in the framework of the equation of state, $p_r=\frac{1}{3}(\rho-4B)$, proposed in the MIT bag model, where $B$ is termed as the bag constant. Considering extreme Wood-Saxon-like…

General Relativity and Quantum Cosmology · Physics 2026-03-17 Sourav Biswas , Debadri Bhattacharjee , Pradip Kumar Chattopadhyay , Nawal H. Siddig , Euaggelos E. Zotos , Laila Abdulaziz Al-Essa

We have studied the variation of a thermodynamic quantity, the strange chemical potential, in the phase diagram of nuclear matter, by employing the partition function in each domain and enforcing strangeness conservation. We propose that…

High Energy Physics - Phenomenology · Physics 2007-05-23 Apostolos D. Panagiotou , Panayotis Katsas , Elpida Gerodimou

Surface effects in strange-quark matter play an important role for certain observables which have been proposed in order to identify strange stars, and color superconductivity can strongly modify these effects. We study the surface of color…

Nuclear Theory · Physics 2009-09-29 Micaela Oertel , Michael Urban

We revisit three of the mathematical formalisms used to describe magnetized quark matter in compact objects within the MIT and the Nambu-Jona-Lasinio models and then compare their results. The tree formalisms are based on 1) isotropic…

Nuclear Theory · Physics 2016-02-09 Debora P. Menezes , Luiz L. Lopes

We found new class of solutions to the Einstein-Maxwell system of equations for charged quark matter within the framework of MIT Bag Model considering a gravitational potential Z(x) proposed by Thirukkanesh and Ragel (2013), which depends…

General Relativity and Quantum Cosmology · Physics 2014-07-01 Manuel Malaver

We analyze the color-flavor-locked phase of strange quark matter modelled by the three-flavor Nambu-Jona-Lasinio (NJL) framework with and without magnetic field and discuss some additional constraints on the stability scenario when a high…

Nuclear Theory · Physics 2013-07-10 L. Paulucci , J. E. Horvath , E. J. Ferrer , V. de la Incera

We review the current status of the research on effective nonlocal NJL-like chiral quark models with separable interactions, focusing on the application of this approach to the description of the properties of hadronic and quark matter…

High Energy Physics - Phenomenology · Physics 2021-01-26 D. Gomez Dumm , J. P. Carlomagno , N. N. Scoccola

The properties of dark matter admixed strange quark stars are investigated in the Starobinsky model of modified gravity. For quark matter we assume the MIT bag model, while self-interacting dark matter inside the star is modelled as a…

General Relativity and Quantum Cosmology · Physics 2018-02-14 Ilidio Lopes , Grigoris Panotopoulos

We construct a model for dense matter based on low-density nuclear matter properties that exhibits a chiral phase transition and that includes strangeness through hyperonic degrees of freedom. Empirical constraints from nuclear matter alone…

Nuclear Theory · Physics 2022-09-28 Eduardo S. Fraga , Rodrigo da Mata , Savvas Pitsinigkos , Andreas Schmitt

In a simplified model we study the hadronization of quark matter in an expanding fireball, in particular the approach to a final hadronic composition in equilibrium. Ideal hadron gas equilibrium constrained by conservation laws, the…

High Energy Physics - Phenomenology · Physics 2008-11-26 T. S. Biro , P. Levai , J. Zimanyi

Perturbative Quantum Chromodynamics corrections and the colour superconductivity indicate that strongly interacting matter can manifest unique physical behaviours under extreme conditions. Motivated by this notion, we investigate the…

General Relativity and Quantum Cosmology · Physics 2025-01-22 Debadri Bhattacharjee , Koushik Ballav Goswami , Pradip Kumar Chattopadhyay

QCD is the fundamental theory to describe the strong interaction, where quarks and gluons have the color degrees of freedom. However, a single quark or gluon can not be separated out and all observable particles are color singlet states.…

General Physics · Physics 2021-09-22 P. Wang

We investigate effects of the modified $f(R, \mathcal{T})$ gravity on the charged strange quark stars with the standard choice of $f(R, \mathcal{T})=R+2\chi \mathcal{T}$. Those types of stars are supposed to be made of strange quark matter…

General Relativity and Quantum Cosmology · Physics 2019-11-06 Debabrata Deb , Sergei V. Ketov , Maxim Khlopov , Saibal Ray

We investigate the properties of mixed stars formed by hadronic and quark matter in $\beta$-equilibrium described by appropriate equations of state (EOS) in the framework of relativistic mean-field theory. We use the non- linear Walecka…

Nuclear Theory · Physics 2009-11-10 D. P. Menezes , C. Providencia

Relativistic heavy-ion collisions give rise to the formation of both deconfined QCD matter and a strong magnetic field. The spin of heavy quarks is influenced by interactions with the external magnetic field as well as by random scatterings…

Nuclear Theory · Physics 2025-11-18 Zhiwei Liu , Yunfan Bai , Shiqi Zheng , Anping Huang , Baoyi Chen

Propagation of the heavy quark in the field of a static antiquark source is studied in the framework of effective Dirac equation. The model of QCD vacuum is described by bilocal gluonic correlators. In the heavy quark limit the effective…

High Energy Physics - Phenomenology · Physics 2009-10-30 Yu. S. Kalashnikova , A. V. Nefediev

Low-baryon number lumps of strange quark matter, strangelets, are presently searched for in ultra-relativistic heavy-ion experiments at CERN and Brookhaven. This paper gives an overview of the physical properties of strangelets with…

High Energy Physics - Phenomenology · Physics 2016-09-01 Jes Madsen
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