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arXiv · 2508.15912

$f$-mode Oscillations for Hyperons and H-dibaryons in Neutron Stars

Rajesh Maiti·Jesper Leong·Debarati Chatterjee·Anthony W. Thomas
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Abstract

The fundamental ($f$-mode) oscillations of neutron stars are studied within the quark meson coupling model, a relativistic Hartree-Fock theory of dense nuclear matter, which takes into account the self-consistent modification of the valence quark structure of the bound baryons in the associated strong Lorentz scalar mean fields. For the first time, hyperons and H-dibaryons are included, along with the effects of potential additional short-range repulsion within this scheme, and their influence on $f$-modes is investigated. Universal relations are studied within the relativistic Cowling approximation and compared against those in the existing literature for potential applications in gravitational wave asteroseismology.

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Rajesh Maiti, Jesper Leong, Debarati Chatterjee, Anthony W. Thomas. 2025-08-21. $f$-mode Oscillations for Hyperons and H-dibaryons in Neutron Stars. https://doi.org/10.1103/j552-znzz

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