Non-Commutative Black Hole Algebra and String Theory from Gravity

TL;DR

This paper extends 't Hooft's black hole interaction model to include transverse momenta and curvature, resulting in a string theory-like action with non-commuting coordinates, and explores connections to M(atrix) theory.

Contribution

It introduces a generalized action incorporating transverse effects and antisymmetric tensors, linking black hole physics to string theory and non-commutative geometry.

Findings

Derived a new black hole interaction action with string theory features.

Identified non-commuting coordinates at the quantum level.

Proposed a relation between the model and M(atrix) theory.

Abstract

We generalize the action found by 't Hooft, which describes the gravitational interaction between ingoing and outgoing particles in the neighbourhood of a black hole. The effect of this back-reaction is that of a shock wave, and it provides a mechanism for recovering information about the momentum of the incoming particles. The new action also describes particles with transverse momenta and takes into account the transverse curvature of the hole, and has the form of a string theory action. Apart from the Polyakov term found by 't Hooft, we also find an antisymmetric tensor, which is here related to the momentum of the particles. At the quantum level, the identification between position and momentum operators leads to four non-commuting coordinates. A certain relation to M(atrix) theory is proposed.