Holography Inspired Stringy Hadrons

TL;DR

This paper reviews holography-inspired string models for hadrons, detailing their derivation, classical dynamics, quantization, and comparison with experimental data, including predictions for higher states and glueballs.

Contribution

It provides a comprehensive derivation and analysis of holography-inspired stringy hadron models, connecting string configurations to real hadron data and making new predictions.

Findings

Determined classical trajectories of holographic string configurations for hadrons.

Extracted model parameters like tension and masses from experimental data.

Made predictions for higher excited hadron states and potential glueball identification.

Abstract

Holography inspired stringy hadrons (HISH) is a set of models that describe hadrons: mesons, baryons and glueballs as strings in four dimensional space time. The models are based on a "map" from stringy hadrons of holographic confining backgrounds. In this note we review the "derivation" of the models. We start with a brief reminder of the passage from the AdS5xS5 string theory to certain flavored confining holographic models. We then describe the string configurations in holographic backgrounds that correspond to a Wilson line,a meson,a baryon and a glueball. The key ingredients of the four dimensional picture of hadrons are the "string endpoint mass" and the "baryonic string vertex". We determine the classical trajectories of the HISH. We review the current understanding of the quantization of the hadronic strings. We end with a summary of the comparison of the outcome of the HISH models with the PDG data about mesons and baryons. We extract the values of the tension, masses and intercepts from best fits, write down certain predictions for higher excited hadrons and present attempts to identify glueballs