Nucleon Form Factors in Nuclear Medium

TL;DR

This paper uses holographic methods to study how nucleon form factors change in a nuclear medium, revealing isospin-dependent splitting due to medium properties.

Contribution

It introduces a holographic model incorporating an anomalous dimension and thermal charged AdS geometry to analyze nucleon form factors in nuclear matter.

Findings

Nucleon mass depends on the anomalous dimension.

Form factors split into four distinct values in asymmetric nuclear media.

The model captures isospin-dependent effects on nucleon properties.

Abstract

By using the AdS/CFT correspondence, we investigate various form factors between nucleons and mesons in a nuclear medium. In order to describe a nuclear medium holographically, we take into account the thermal charged AdS geometry with an appropriate IR cutoff. After introducing an anomalous dimension as a free parameter, we investigate how the nucleon's mass is affected by the change of the anomalous dimension. Moreover, we study how the form factors of nucleons rely on the properties of the nuclear medium. We show that in a nuclear medium with different numbers of proton and neutron, the degenerated nucleon form factor in the vacuum is split to four different values depending on the isospin charges of nucleon and meson.