The classical double copy of non-singular black holes

Understand

We apply the classical double copy procedure to a class of regular, non-singular black hole solutions.

• We give several examples, paying particular attention to a string-theory-corrected black hole solution emerging from T-duality.
• Non-perturbative stringy corrections introduce an ultraviolet (UV) zero-point length cutoff which results in non-singular black hole spacetimes.
• Apart from the UV regulator, the solution is equivalent to the Bardeen black hole spacetime.