Abstract Details
| Name: Probit Kalita Affiliation: National Institute of Technology Rourkela Conference ID: ASI2025_495 Title : Exploring the impact of the $\sigma$-cut scheme on neutron star oscillations and thermal relaxations Authors and Co-Authors : Probit Jyoti Kalita 1, Bharat Kumar 1 Abstract Type : Poster Abstract Category : High Energy Phenomena, Fundamental Physics and Astronomy Abstract : The σ-cut scheme was recently proposed as a method of stiffening the neutron-star equation of state (EoS) at high densities without altering its behavior around the nuclear saturation density. We use the σ-cut scheme to describe the dense matter containing hyperons and kaons, enabling us to obtain high-mass neutron stars without having to modify the relativistic mean field (RMF) model parameters. Using three different parametrizations of the RMF model, we investigate the effects of the σ-cut scheme on particle populations, tidal deformability, nonradial oscillations, and thermal evolution of neutron stars. Our investigations yielded promising results, supporting the use of the σ-cut scheme as a viable method for incorporating additional exotic degrees of freedom in neutron-star matter. This is particularly evident in the thermal evolution calculations, where it significantly enhances the alignment between the theoretical predictions and the observed temperatures of neutron stars. |