Quantum gravity and the zero point length

Understand

In this paper, we present an overview of some of the existing issues of the research in quantum gravity.

• We also introduce the basic ideas that led Padmanabhan to consider a duality property in path integrals.
• Such a duality is consistent with the T-duality in string theory.
• More importantly, the path integral duality discloses a universal feature of any quantum geometry, namely the existence of a zero point length $L_0$.