The Asymptotically Safe Gravity (ASG) framework suggests a "running"Newtonian coupling constant, which depends on two free parameters ω and γ. The new black hole metrics inferred from such a "running"gravitational constant naturally match with a Schwarzschild metric at large radial coordinate. By further imposing the matching with the Donoghue quantum corrections to the Schwarzschild field, we find a negative value of the ω∼ parameter, and this leads to a not yet explored black hole metric, which surprisingly turns out to describe the so-called Planck stars.
A metric for Planck Stars derived from Gravity in Asymptotic Safety
Scardigli, Fabio
Membro del Collaboration Group
;Lambiase, GaetanoMembro del Collaboration Group
2023-01-01
Abstract
The Asymptotically Safe Gravity (ASG) framework suggests a "running"Newtonian coupling constant, which depends on two free parameters ω and γ. The new black hole metrics inferred from such a "running"gravitational constant naturally match with a Schwarzschild metric at large radial coordinate. By further imposing the matching with the Donoghue quantum corrections to the Schwarzschild field, we find a negative value of the ω∼ parameter, and this leads to a not yet explored black hole metric, which surprisingly turns out to describe the so-called Planck stars.File in questo prodotto:
Non ci sono file associati a questo prodotto.
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
