Quantum Gravitational Corrections to a Star Metric and the Black Hole Limit

Understand

In this paper we consider the full set of quantum gravitational corrections to a star metric to second order in curvature.

• As we use an effective field theoretical approach, these corrections apply to any model of quantum gravity that is based on general coordinate invariance.
• We then discuss the black hole limit and identify an interesting phenomenon which could shed some light on the nature of astrophysical black holes: while star metrics receive corrections at second order in curvature, vacuum solutions such as black hole metrics do not.
• What happens to these corrections when a star collapses?