69 citations · 69 across the 2 of their papers we have counts for
8 papers
Note on initial conditions for small-field inflation
Ignatios Antoniadis, Auttakit Chatrabhuti, Hiroshi Isono +1
We show that initial conditions for small-field inflation can be determined quantum mechanically by introducing a suitable flattened region in the scalar potential. The inflaton is…
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…
Evaporating primordial black holes as varying dark energy
Savvas Nesseris, Domenico Sapone, Spyros Sypsas
If light enough primordial black holes (PBH) account for dark matter, then its density decreases with time as they lose mass via Hawking radiation. We show that this time-dependenc…
Non-Gaussian CMB and LSS statistics beyond polyspectra
Gonzalo A. Palma, Bruno Scheihing Hitschfeld, Spyros Sypsas
Cosmic inflation may have led to non-Gaussian initial conditions that cannot be fully parametrised by 3- and/or 4-point functions. In this work, we discuss various strategies to se…
Reconstructing the Inflationary Landscape with Cosmological Data
Xingang Chen, Gonzalo A. Palma, Bruno Scheihing Hitschfeld +1
We show that the shape of the inflationary landscape potential may be constrained by analyzing cosmological data. The quantum fluctuations of fields orthogonal to the inflationary…
Landscape tomography through primordial non-Gaussianity
Xingang Chen, Gonzalo A. Palma, Walter Riquelme +2
In this paper, we show how the structure of the landscape potential of the primordial Universe may be probed through the properties of the primordial density perturbations responsi…