  The holographic approach is applied to study the chaotic behaviour of a
strongly coupled $Q \bar Q$ pair in general thermal background. We consider two
different backgrounds, one with finite temperature and baryon density, and one
with finite temperature and constant magnetic field along a fixed direction.
The results allow us to understand the dependence of the chaotic dynamics on
the background, to test the universal bound on chaos conjectured by Maldacena,
Shenker and Standford (MSS)
