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arXiv · 2508.08581

Baryon and Pseudoscalar Meson Octets within a Unified broken SU(6) symmetry

Luiz L. Lopes
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Abstract

In this work, I discuss neutron stars with hyperons and anti-kaon condensate. To fix their coupling constants with the vector mesons of the Quantum Hadrodynamics, I use a unified scheme imposing that the Yukawa coupling is an invariant under SU(3) and SU(6) groups. Combining with the G-Parity, I show that some expected results of the kaon and anti-kaon interaction with the nucleus are re-obtained. In the same sense, the naive quark-isospin counting rule is restored in the SU(6) limit. Furthermore, the G-Parity combined with the SU(3) gives us a clear picture of the role played by each meson in the kaon condensation. Numerical results show that the presence of anti-kaons severely compromises the stiffening of the EOS by breaking the SU(6) symmetry.

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Luiz L. Lopes. 2025-08-12. Baryon and Pseudoscalar Meson Octets within a Unified broken SU(6) symmetry. https://doi.org/10.1103/nmhy-7f9t

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