178 citations · 178 across the 3 of their papers we have counts for
3 papers
Particle creation from non-geodesic trajectories in multifield inflation
Nicolás Parra, Spyros Sypsas, Gonzalo A. Palma +1
Particle production in de Sitter spacetime arises from the exponential expansion of space, rendering the Bunch-Davies vacuum perceived as a particle-containing state by late-time o…
Primordial gravitational waves from excited states
Jacopo Fumagalli, Gonzalo A. Palma, Sébastien Renaux-Petel +3
We show that a scalar excited state with large occupation numbers during inflation leads to an enhancement of tensor modes and a characteristic pattern of order-one oscillations in…
Seeding primordial black holes in multifield inflation
Gonzalo A. Palma, Spyros Sypsas, Cristobal Zenteno
The inflationary origin of primordial black holes (PBHs) relies on a large enhancement of the power spectrum of the curvature fluctuation at wavelengths much shorter than…