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arXiv · 2410.06088

White Dwarf Structure and Binary Inspiral Gravitational Waves from Quantum Hadrodynamics

Ling-Jun Guo·Yao Ma·Yong-Liang Ma·Ruo-Xi Wu·Yue-Liang Wu
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Abstract

White dwarfs, one of the compact objects in the universe, play a crucial role in astrophysical research and provide a platform for exploring nuclear physics. In this work, we extend the relativistic mean field approach by using a Walecka-type quantum hadrodynamics model to capture the intricate structure of white dwarfs. We calculate nuclear properties, Coulomb energy, and photon energy within white dwarfs in a unified framework. By carefully calibrating the model parameters to align with nuclear matter properties, we successfully reproduce the structures of several elements in white dwarfs, such as the isotopes of $\rm C$ and $^{16}\rm O$, except for the unnaturally deeply bound state $^4$He. Furthermore, we predict the characteristics of white dwarfs composed of atom-like units and the gravitational waves stemming from binary white dwarf inspirals incorporating tidal deformability contributions up to the 2.5 post-Newtonian order. These results shed light on the structure of white dwarfs and provide valuable information for future gravitational wave detection. This methodological advancement allows for a cohesive analysis of white dwarfs, neutron stars, and the nuclear pasta within a unified theoretical framework.

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Ling-Jun Guo, Yao Ma, Yong-Liang Ma, Ruo-Xi Wu, Yue-Liang Wu. 2025-08-14. White Dwarf Structure and Binary Inspiral Gravitational Waves from Quantum Hadrodynamics. https://arxiv.org/abs/2410.06088

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