May 20 – 23, 2025
IP2I
Europe/Paris timezone

Holographic analysis of near-conformal dynamics and light dilaton

May 22, 2025, 10:30 AM
55m
Dirac/RdC-Amphithéâtre (IP2I)

Dirac/RdC-Amphithéâtre

IP2I

4 rue Fermi, 69622 Villeurbanne
160
Fixed Point & Compositeness Fixed Point & Compositeness

Speaker

Deog Ki Hong

Description

We carry out a detailed analysis of the region slightly outside the conformal window of a non-trivial infrared fixed point in a generic bottom-up holographic setup. We focus on models, which study the dynamics of a scalar field, dual to quark degrees of freedom, in a (nearly) AdS geometry. Such models realize the picture expected for vector-like near-conformal theories from Dyson-Schwinger analysis. The analysis covers a toy model, which allows for analytic solutions, and a more general setup as well, which encompass a complete model for the ultraviolet physics. We analyze the conditions for the appearance of a parametrically light scalar state in the spectrum, which can act as a candidate for the Pseudo-Nambu-Goldstone boson arising from breaking of the approximate conformal symmetry. We also present detailed results for the vacuum structure, correlators, and Ward identities in the near-conformal regime.

Based on: https://arxiv.org/abs/2504.18623

Presentation materials