359 citations · 1.7k across the 33 of their papers we have counts for
3 papers · 2 filters
Turning in the landscape: a new mechanism for generating Primordial Black Holes
Jacopo Fumagalli, Sébastien Renaux-Petel, John W. Ronayne +1
We propose a new model-independent mechanism for producing primordial black holes from a period of multi-field inflation. This requires an enhancement of primordial fluctuations at…
Back-reaction in massless de Sitter QFTs: holography, gravitational DBI action and f(R) gravity
Jewel Kumar Ghosh, Elias Kiritsis, Francesco Nitti +1
We employ gauge-gravity duality to study the backreaction effect of 4-dimensional large- quantum field theories on constant-curvature backgrounds, and in particular de Sitter sp…
The self-tuning of the cosmological constant and the holographic relaxion
Yuta Hamada, Elias Kiritsis, Francesco Nitti +1
We propose a brane-world setup based on gauge/gravity duality that permits the simultaneous realisation of self-tuning of the cosmological constant and a stabilisation of the elect…