Holographic chiral dynamics in confinement at finite baryon density

豊田 文彦 (近畿大学 産業理工学部)

素粒子論研究・電子版 Vol. 46 (2026) No. 4

2026年3月6日受理

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概要

We study chiral condensate in a cold nuclear matter based on a holographic theory, which would be dual to a baryon system in quantum chromodynamics (QCD) in the confinement phase. We found that the magnitude of the chiral condensate $C$ obtained in our model decreases with increasing baryon density. The level of decreasing depends on the quark mass $m_q$. When $m_q = 0$, $C$ decreases to zero and the chiral symmetry is restored. In case of $m_q \neq 0$, $C$ decreases but does not tend to $0$ and the chiral breaking is reserved. We also calculate the renormalized action $S_{ren}$ and obtain the equation of state (EoS) for the cold nuclear matter.