Magnetized strange quark matter and magnetized strange quark stars

Abstract

Strange quark matter could be found in the core of neutron stars or forming strange quark stars. As is well known, these astrophysical objects are endowed with strong magnetic fields which affect the microscopic properties of matter and modify the macroscopic properties of the system. In this paper we study the role of a strong magnetic field in the thermodynamical properties of a magnetized degenerate strange quark gas, taking into account beta-equilibrium and charge neutrality. Quarks and electrons interact with the magnetic field via their electric charges and anomalous magnetic moments. In contrast to the magnetic field value of 10^19 G, obtained when anomalous magnetic moments are not taken into account, we find the upper bound B < 8.6 x 10^17 G, for the stability of the system. A phase transition could be hidden for fields greater than this value.

9 pages, 9 figures

Cited by in corpus (5)

• Equation of State of a Dense and Magnetized Fermion System
• Quark matter under strong magnetic fields in the Nambu--Jona-Lasinio Model
• Anisotropic Pressures in Very Dense Magnetized Matter
• Quark matter under strong magnetic field in chiral models
• Magnetars as Highly Magnetized Quark Stars: an analytical treatment