Anisotropic pressure in the quark core of a strongly magnetized hybrid star

1st International Kaidalov Workshop on the Phenomenology of High Energy Particle Physics

Isayev, A.A.^1

Kharkov Institute of Physics and Technology, Academicheskaya Street 1, Kharkov

61108, Ukraine^1

关键词: Anisotropic pressure;    Baryon number density;    Central magnetic field;    Massachusetts Institute of Technology;    Strong magnetic fields;    Total energy;    Transverse pressure;    Zero temperatures;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/607/1/012013/pdf
DOI  :  10.1088/1742-6596/607/1/012013

来源: IOP

【 摘 要 】

The impact of a strong magnetic field, varying with the total baryon number density, on thermodynamic properties of strange quark matter (SQM) in the core of a magnetized hybrid star is considered at zero temperature within the framework of the Massachusetts Institute of Technology (MIT) bag model. It is clarified that the central magnetic field strength is bound from above by the value at which the derivative of the longitudinal pressure with respect to the baryon number density vanishes first somewhere in the quark core under varying the central field. Above this upper bound, the instability along the magnetic field is developed in magnetized SQM. The total energy density, longitudinal and transverse pressures are found as functions of the total baryon number density.