Abstract Details
| Name: Athira S Affiliation: Indian Institute of Technology Jodhpur Conference ID: ASI2025_32 Title : Kaonic dense matter inside stellar compact object from SU(3) symmetry Authors and Co-Authors : Athira S 1, Monika Sinha 1, Vivek Baruah Thapa 2, Vishal Parmar1,3, Debades Bandyopadhyay 4 Abstract Type : Poster Abstract Category : High Energy Phenomena, Fundamental Physics and Astronomy Abstract : Observations of massive pulsars suggest that the central densities of compact stars can far exceed nuclear saturation density, potentially forming exotic matter like hyperons, meson condensates, and quark matter. Anti-kaon ($K^-$) condensation, a key candidate among meson condensates, is not fully understood in terms of kaon-meson interactions. Using SU(3) flavor symmetry, we calculate hadronic couplings in the mesonic sector, refining earlier quark model approaches. Key parameters—mixing angle ($\theta_v$), octet-to-singlet coupling ratio ($z$), and symmetric-antisymmetric weight factor ($\alpha_v$)—are determined, with $\alpha_v$ treated as a free parameter. Our results show that higher $\alpha_v$ values stiffen the equation of state, delay $K^-$ condensation, and increase neutron star masses. $K^-$ condensation occurs via a second-order phase transition, with its onset highly sensitive to $\alpha_v$. |