Holographic Nucleons in the Nuclear Medium

TL;DR

This paper uses holographic duality to study how nucleon masses and dispersion relations change in nuclear media, revealing density-dependent mass variations and isospin effects.

Contribution

It introduces a holographic model to analyze nucleon properties in nuclear medium, highlighting the role of chiral condensate and isospin interactions.

Findings

Nucleon mass increases with density at high densities.

Chiral condensate significantly affects nucleon mass and dispersion.

Isospin interactions cause nucleon mass splitting.

Abstract

We investigate the nucleon's rest mass and dispersion relation in the nuclear medium which is holographically described by the thermal charged AdS geometry. On this background, the chiral condensate plays an important role to determine the nucleon's mass in both the vacuum and the nuclear medium. It also significantly modifies the nucleon's dispersion relation. The nucleon's mass in the high density regime increases with density as expected, while in the low density regime it slightly decreases. We further study the splitting of the nucleon's masses caused by the isospin interaction with the nuclear medium.