Adiabaticity and emergence of classical space-time in time-dependent matrix theories

TL;DR

This paper explores how classical space-time emerges from time-dependent matrix theories in low-curvature regimes, emphasizing the role of adiabaticity and supersymmetry restoration for a consistent quantum gravity description.

Contribution

It demonstrates that the emergence of classical space-time is closely tied to adiabatic evolution and supersymmetry restoration in time-dependent matrix theories.

Findings

Classical space-time emerges in low-curvature regimes.

Adiabaticity is crucial for space-time emergence.

Supersymmetry is restored in the adiabatic regime.

Abstract

We discuss the low-curvature regime of time-dependent matrix theories proposed to describe non-perturbative quantum gravity in asymptotically plane-wave space-times. The emergence of near-classical space-time in this limit turns out to be closely linked to the adiabaticity of the matrix theory evolution. Supersymmetry restoration at low curvatures, which is crucial for the usual space-time interpretation of matrix theories, becomes an obvious feature of the adiabatic regime.