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Stiff equation of state for a holographic nuclear matter as instanton gas

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arxiv 2107.14450 v2 pith:E7HUHTTQ submitted 2021-07-30 hep-th

Kazuo Ghoroku , Kouji Kashiwa , Yoshimasa Nakano , Motoi Tachibana , Fumihiko Toyoda This is my paper · ORCID
classification hep-th
keywords matternuclearequationstarstateholographicinstantonapproximation
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In a holographic model, which was used to investigate the color superconducting phase of QCD, a dilute gas of instantons is introduced to study the nuclear matter. The free energy of the nuclear matter is computed as a function of the baryon chemical potential in the probe approximation. Then the equation of state is obtained at low temperature. Using the equation of state for the nuclear matter, the Tolman-Oppenheimer-Volkov equations for a cold compact star are solved. We find the mass-radius relation of the star, which is similar to the one for quark star. This similarity implies that the instanton gas given here is a kind of self-bound matter.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Holographic Soliton Crystals for Dense Nuclear Matter and Neutron Stars

    hep-ph 2026-07 conditional novelty 7.0 of 10

    A crystal of holographic baryons in the Witten-Sakai-Sugimoto model yields a nuclear-matter equation of state compatible with neutron-star observations.

  2. Condensate phases of nuclear matter from AdS Hardwall models

    hep-th 2025-02 conditional novelty 6.0 of 10

    In a hardwall AdS/QCD model with phenomenological boundary conditions, both baryonic and quark condensates dominate the low-temperature phase diagram of dense nuclear matter.

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