| 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: | Athira S 1, Monika Sinha 1, Vivek Baruah Thapa 2, Vishal Parmar1,3, Debades Bandyopadhyay 4 |
| Authors Affiliation: | 1 Athira S, Monika Sinha, Vishal Parmar (Indian Institute of Technology Jodhpur, Jodhpur- 342037, India)
2 Vivek Baruah Thapa (Bhawanipur Anchalik College, Barpeta, Assam- 781352, India)
3 Vishal Parmar (INFN, Sezione di Pisa, Largo B. Pontecorvo 3, I-56127 Pisa, Italy)
4 Debades Bandyopadhyay (Department of Physics, Aliah University, New Town - 700160, India)
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| Mode of Presentation: | 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 $\alpha_v$. |
