31 citations · 96 across the 8 of their papers we have counts for
15 papers
Covariant singularities: a brief review
Roberto Casadio, Alexander Kamenshchik, Iberê Kuntz
The Hawking-Penrose theorem is not covariant under field redefinitions. Should the invariance under such transformations be a true principle in Nature, spacetime singularities beco…
Effective metric outside bootstrapped Newtonian sources
Roberto Casadio, Andrea Giusti, Iberê Kuntz +1
We determine the complete space-time metric from the bootstrapped Newtonian potential generated by a static spherically symmetric source in the surrounding vacuum. This metric cont…
Covariant singularities in Quantum Field Theory and Quantum Gravity
Roberto Casadio, Alexander Kamenshchik, Iberê Kuntz
It is rather well-known that spacetime singularities are not covariant under field redefinitions. A manifestly covariant approach to singularities in classical gravity was proposed…
Revisiting the minimum length in the Schwinger-Keldysh formalism
Roberto Casadio, Iberê Kuntz
The existence of a minimum length in quantum gravity is investigated by computing the in-in expectation value of the proper distance in the Schwinger-Keldysh formalism. No minimum…
Bootstrapped Newtonian quantum gravity
Roberto Casadio, Iberê Kuntz
We compute quantum corrections for the gravitational potential obtained by including a derivative self-coupling in its classical dynamics as a toy model for analysing quantum gravi…
Singularity avoidance in quantum gravity
Iberê Kuntz, Roberto Casadio
The purpose of this work is to investigate the consequences of quantum gravity for the singularity problem. We study the higher-derivative terms that invariably appear in any quant…