# 19th International Conference on Hadron Spectroscopy and Structure in memoriam Simon Eidelman

26-31 July 2021
Mexico City
Mexico/General timezone
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# Contribution Parallel

Mexico City -
Meson Spectroscopy

# Nonlinear Regge trayectories in the context of bottom-up holography

## Speakers

• Dr. Miguel Angel MARTIN CONTRERAS

## Abstract

Motivated by the fact that mesonic constituent mass $m_q$ breaks linearity in Regge trajectories, we discuss how to implement nonlinear behavior holographically by deforming the quadratic dilaton into a non-quadratic one. This deformation adds an extra parameter into the model, which measures the $m_q$ effect, accounting for nonlinearity in the trajectory. We applied this model to the description of the isovector multiplet spectrum, vector heavy-light mesons, and vector non $q\bar{q}$ states.