4 papers
Gravitational waves induced by matter isocurvature in general cosmologies
Guillem Domènech, Jan Tränkle
The expansion history and content of the Universe between the end of inflation and the onset of Big Bang Nucleosynthesis is mostly unknown. In this paper, we study gravitational wa…
From formation to evaporation: Induced gravitational wave probes of the primordial black hole reheating scenario
Guillem Domènech, Jan Tränkle
We study the Primordial Black Hole (PBH) reheating scenario, where PBHs originate in a general cosmological background. In this scenario, ultralight PBHs with masses $M\lesssim 10^…
Probing modified Hawking evaporation with gravitational waves from the primordial black hole dominated universe
Shyam Balaji, Guillem Domènech, Gabriele Franciolini +2
It has been recently proposed that Hawking evaporation might slow down after a black hole has lost about half of its mass. Such an effect, called "memory burden", is parameterized…
Effective action and black hole solutions in asymptotically safe quantum gravity
Jan M. Pawlowski, Jan Tränkle
We derive the quantum effective action and the respective quantum equations of motion from multi-graviton correlation functions in asymptotically safe quantum gravity. The fully mo…