Exploring the impact of the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>σ</mml:mi></mml:math>-cut scheme on neutron star oscillations and thermal relaxations

The $\ensuremath{\sigma}$-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 $\ensuremath{\sigma}$-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 $\ensuremath{\sigma}$-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 $\ensuremath{\sigma}$-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.