Journal
GENERAL RELATIVITY AND GRAVITATION
Volume 54, Issue 9, Pages -Publisher
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10714-022-02995-4
Keywords
Quantum gravity; Minimal length; Black holes
Funding
- Projekt DEAL
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This paper provides an overview of the current issues in quantum gravity research. It introduces the concept of duality in path integrals, which is consistent with T-duality in string theory. The duality reveals a universal feature of quantum geometry, namely the existence of a zero point length L-0. Recent developments exploring the effects of L-0 in strong electrodynamics and black holes are also discussed.
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. We also comment about recent developments aiming to expose effects of the zero point length in strong electrodynamics and black holes. There are reasons to believe that the main characters of the phenomenology of quantum gravity may be described by means of a single parameter like L-0.
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