Pradip K Sahu | Searcharxiv

arXiv1995

Strange matter and its stability in presence of magnetic field

We study the effect of a magnetic field on the interacting quark matter and apply to strange star. We considere the low temperature approximation to strange matter. We find that the interacting strange quark matter is more stable compare to free quark gas in presence of strong external magnetic field with zero and finite temperature. We then calculate strange star structure parameters such as mass and radius and find that the strange star is more compact for interacting quark matter than free quark matter in presence of strong magnetic field.

astro-ph↗

arXiv1995

Two-loop QED with External Magnetic Field

In two - loop effective Lagrangian, the low - temperature expansion of the $QED_{3+1}$ with a constant magnetic field and a finite chemical potential is performed. We then calculate the total fermion density, some components of polarization operator and de Hass -van Alphen oscillations. We find that there is a significant contribution from two-loop expansion to magnetization and fermion density for higher values of chemical potentials.

hep-th↗