3 papers
gr-qc2024
Inner horizon instability via the trace anomaly effective action
Julio Arrechea, Giulio Neri, Stefano Liberati
In quantum field theory applied to black hole spacetimes, substantial evidence suggests that the Unruh and Hartle-Hawking vacuum states become singular at Cauchy horizons. This rai…
gr-qc2023
After collapse: On how a physical vacuum can change the black hole paradigm
Julio Arrechea, Carlos Barceló, Valentin Boyanov
Standard General Relativity assumes that, in the absence of classical matter sources, spacetime is empty. This chapter considers and analyses the new behaviours of the gravitationa…
gr-qc2023
Renormalized stress-energy tensor for scalar fields in Hartle-Hawking, Boulware and Unruh states in the Reissner-Nordström spacetime
Julio Arrechea, Cormac Breen, Adrian Ottewill +1
In this paper, we consider a quantum scalar field propagating on the Reissner-Nordström black hole spacetime. We compute the renormalized stress-energy tensor for the field in the…