arXiv subjects

Roni Saha

Publications and source records attributed to Roni Saha.

2 recordsLinked to original sources

arXiv2008

On the Low Surface Magnetic Field Structure of Quark Stars

Following some of the recent articles on hole super-conductivity and related phenomena by Hirsch \cite{H1,H2,H3}, a simple model is proposed to explain the observed low surface magnetic field of the expected quark stars. It is argued that the diamagnetic moments of the electrons circulating in the electro-sphere induce a magnetic field, which forces the existing quark star magnetic flux density to become dilute. We have also analysed the instability of normal-superconducting interface due to excess accumulation of magnetic flux lines, assuming an extremely slow growth of superconducting phase through a first order bubble nucleation type transition.

astro-ph↗

arXiv2006

Neutron Star Equation of State and the Possibility of Complex Self-Energy in Landau Theory of Fermi Liquid in Presence of Strong Quantizing Magnetic Field

Using a relativistic version of Landau theory of Fermi liquid with $σ-ω$ and $ρ$ mesons exchange, we have obtained an equation of state for dense neutron star matter in presence of strong quantizing magnetic field. It is found that in this scenario the self energies of both neutron and proton components of dense neutron star matter become complex under certain physical conditions. To be more specific, it is observed that in the exchange diagrams of $σ$, $ω$ and neutral $ρ$ transfer processes and in the direct interaction diagram with $ρ_\pm$ transfer reactions, the nucleon self-energies become complex in nature.

astro-ph↗