Resolving Spacetime Singularities within Asymptotic Safety

A key incentive of quantum gravity is the removal of spacetime singularities plaguing the classical theory. We compute the nonperturbative momentum dependence of a specific structure function within the gravitational asymptotic safety program which encodes the quantum corrections to the graviton pro...

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Bibliographic Details
Published in:Physical review letters 2019-09, Vol.123 (10), p.101301, Article 101301
Main Authors: Bosma, Lando, Knorr, Benjamin, Saueressig, Frank
Format: Article
Language:English
Subjects:
Asymptotic properties
Dependence
Gravitons
Quantum gravity
Relativity
Safety programs
Singularities
Spacetime
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Summary:A key incentive of quantum gravity is the removal of spacetime singularities plaguing the classical theory. We compute the nonperturbative momentum dependence of a specific structure function within the gravitational asymptotic safety program which encodes the quantum corrections to the graviton propagator for momenta above the Planck scale. The resulting quantum-corrected Newtonian potential approaches a constant negative value as the distance between the two point masses goes to zero, thereby removing the classical singularity. The generic nature of the underlying mechanism suggests that it will remain operative in the context of black hole and cosmic singularities.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.123.101301