Non-commutative Kerr black hole

Understand

This paper applies the first-order Seiberg-Witten map to evaluate the first-order non-commutative Kerr tetrad.

• The classical tetrad is taken to follow the locally non-rotating frame prescription.
• We also evaluate the tiny effect of non-commutativity on the efficiency of the Penrose process of rotational energy extraction from a black hole.