Baryon density and magnetic field effects on chaos in a QQ̅ system at finite temperature

Document Type : Review article

Author

Istituto Nazionale di Fisica Nucleare, Sezione di Bari, Via Orabona 4, I-70126 Bari, Italy Dipartimento Interateneo di Fisica "M. Merlin", Università e Politecnico di Bari, via Orabona 4, 70126 Bari, Italy

Abstract

Baryon density and magnetic field effect on chaos for the holographic dual of a QQ̅ system at finite temperature is studied. A string in an AdS Reissner–Nordstrom background, and in a metric with magnetic field near the black-hole horizon is considered and small time-dependent perturbations of the static configurations are investigated. The proximity to the horizon induces chaos, which is softened increasing

the chemical potential or the magnetic field. A background geometry including the effect of a dilaton is also examined. The Maldacena, Shenker, and Stanford bound on the Lyapunov exponents characterizing the perturbations is satisfied for finite baryon chemical potential and magnetic field and when the dilaton is included in the metric.

Keywords

Main Subjects

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Volume 2, Issue 3
We would like to dedicate this issue to the memory of Prof. M.R. Setare.
August 2022
Pages 55-70
  • Receive Date: 24 May 2022
  • Revise Date: 01 July 2022
  • Accept Date: 09 July 2022