Oct 23 – 25, 2019
Aula Gerace
Europe/Rome timezone
We had been hoping to be able to hold the conference on the originally scheduled period in October 2021 but given the pandemic situation we have decided to postpone the conference period to October 2022.

The Holographic QCD axion (F)

Oct 25, 2019, 2:25 PM
Aula Gerace

Aula Gerace

Polo Fibonacci Edificio C Largo B. Pontecorvo, 3 56127 Pisa
talk Fundamental Interacions Talks on specific topics


Francesco Bigazzi (INFN Firenze)


A holographic model of QCD axion is presented. It describes a composite axion in the KSVZ class. Having a gravity dual, based on the Witten-Sakai-Sugimoto model, it is calculable in the strongly coupled regime and its UV completion is under control. Its basic properties are derived, including the low energy Lagrangian, from which the axion couplings to nucleons can be derived. Basic features in the deconfined phase are studied as well. In particular, the temperature dependence of the axion mass is extracted from the topological susceptibility.

Primary author

Francesco Bigazzi (INFN Firenze)

Presentation materials