The influence of strong magnetic fields on proto-quark stars
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TLDR
In this article, different stages of magnetized quark star evolution incorporating baryon number conservation and using an anisotropic energy momentum tensor were analyzed, and the first stages of the evolution were simulated through the inclusion of trapped neutrinos and fixed entropy per particle, while in the last stage the star was taken to be deleptonized and cold.Abstract:
We analyze different stages of magnetized quark star evolution incorporating baryon number conservation and using an anisotropic energy momentum tensor. The first stages of the evolution are simulated through the inclusion of trapped neutrinos and fixed entropy per particle, while in the last stage the star is taken to be deleptonized and cold. We find that, although strong magnetic fields modify quark star masses, the evolution of isolated stars needs to be constrained by fixed baryon number, which necessarily lowers the possible star masses. Moreover, magnetic field effects, measured by the difference between the parallel and perpendicular pressures, are more pronounced in the beginning of the star evolution, when there is a larger number of charged leptons and up quarks. We also show that having a spatially varying magnetic field allows for larger magnetic fields to be supported.read more
Citations
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Consistent neutron star models with magnetic-field-dependent equations of state
TL;DR: In this paper, a self-consistent model for the study of the structure of a neutron star in strong magnetic fields is presented, which includes the effect of the magnetic field on the equation of state, the interaction of the electromagnetic field with matter, and anisotropies in the energy-momentum tensor, as well as general relativistic aspects.
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Inverse magnetic catalysis in Nambu–Jona-Lasinio model beyond mean field
TL;DR: In this paper, the inverse magnetic catalysis in the Nambu-Jona-Lasinio model was studied and the feed-down from mesons to quarks was embedded in an effective coupling constant at finite temperature and magnetic field.
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Pions in magnetic field at finite temperature
TL;DR: In this paper, the meson propagators in terms of quark bubbles in Ritus and Schwinger schemes are derived, and pion masses are numerically calculated in the Ritus scheme for neutral and charged pions.
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Deformation of a magnetized neutron star
Ritam Mallick,Stefan Schramm +1 more
TL;DR: In this article, the effect of the magnetic field on the mass and shape of a star was studied and the excess mass and change in the equatorial radius of the star due to the non-uniform magnetic field was found to be about 3-4% compared to the spherical solution.
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Magnetic susceptibility of a neutron star crust.
R. D. Blandford,L. Hernquist +1 more
TL;DR: The magnetic susceptibility of the degenerate free electrons in the crust of a neutron star is computed for a range of densities, temperatures, and field strengths as discussed by the authors, and it is shown that when the temperature is low enough (typically less than 107K for densities of about 107 g cm-3 and 1012 G fields), the susceptibility undergoes large de Haas-van Alphen oscillations.
References
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Quantum Theory of an Electron Gas in Intense Magnetic Fields
Vittorio Canuto,Hong-Yee Chiu +1 more
TL;DR: Relativistic electron gas in strong magnetic field, obtaining equation of state with quantum theory as discussed by the authors, was used to obtain the Eq. 1.1.0.0
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Effects of Strong Magnetic Fields in Strange Baryonic Matter
TL;DR: In this paper, the effects of very strong magnetic fields on the equation of state of dense baryonic matter in which hyperons are present were investigated, and it was shown that the maximum average magnetic field within a stable neutron is limited to values B ⩽ 1−3×10 18 ǫG, unless fluctuations dominate the average field strengths in the interior or configurations with significantly larger field gradients are considered.
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Magnetic oscillations in dense cold quark matter with four-fermion interactions
TL;DR: The phase structures of Nambu-Jona-Lasinio models with one or two flavors have been investigated at non-zero values of µ and H, where H is an external magnetic field and µ is the chemical potential.
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Magnetic Color-Flavor Locking Phase in High-Density QCD
TL;DR: It is shown that the long-range component B of the external magnetic field that penetrates the color-flavor locked phase modifies its gap structure, producing a new phase of lower symmetry.
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Bulk Properties of a Fermi Gas in a Magnetic Field
TL;DR: In this article, the authors calculate the number density, energy density, transverse pressure, longitudinal pressure, and magnetization of an ensemble of spin one-half particles in the presence of a homogenous background magnetic field.