The Weak Gravity Conjecture and the Viscosity Bound with Six-Derivative Corrections

Understand

The weak gravity conjecture and the shear viscosity to entropy density bound place constraints on low energy effective field theories that may help to distinguish which theories can be UV completed.

• Recently, there have been suggestions of a possible correlation between the two constraints.
• In some interesting cases, the behavior was precisely such that the conjectures were mutually exclusive.
• Motivated by these works, we study the mass to charge and shear viscosity to entropy density ratios for charged AdS5 black branes, which are holographically dual to four-dimensional CFTs at finite temperature.