Magnetized strange quark matter and magnetized strange quark stars

TL;DR

This paper investigates how strong magnetic fields influence the thermodynamic properties of strange quark matter and strange quark stars, revealing an upper magnetic field limit for stability and potential phase transitions.

Contribution

It introduces a detailed analysis of magnetic effects on strange quark matter, including anomalous magnetic moments, and establishes an upper magnetic field bound for stability.

Findings

Upper magnetic field limit for stability: 8.6 x 10^17 G

Magnetic fields affect phase stability and may induce phase transitions

Anomalous magnetic moments significantly alter magnetic field estimates

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.