249 citations · 618 across the 6 of their papers we have counts for
7 papers · 1 filter
Imprints of cosmological tensions in reconstructed gravity
Levon Pogosian, Marco Raveri, Kazuya Koyama +6
There has been a significant interest in modifications of the standard Cold Dark Matter (CDM) cosmological model prompted by tensions between certain datasets, most notably…
Generalized Brans-Dicke theories in light of evolving dark energy
Alex Zucca, Levon Pogosian, Alessandra Silvestri +2
The expansion history of the Universe reconstructed from a combination of recent data indicates a preference for a changing Dark Energy (DE) density. Moreover, the DE density appea…
MGCAMB with massive neutrinos and dynamical dark energy
Alex Zucca, Levon Pogosian, Alessandra Silvestri +1
We present a major upgrade of MGCAMB, a patch for the Einstein-Boltzmann solver CAMB used for phenomenological tests of general relativity against cosmological datasets. This new v…
Observational Constraints on Constant Roll Inflation
Jose T. Galvez Ghersi, Alex Zucca, Andrei V. Frolov
Constant-roll inflation was recently introduced by Motohashi, Starobinsky and Yokoyama as a phenomenological way to parametrize deviations from the slow-roll scenarios. In this pap…
Evolution of dark energy reconstructed from the latest observations
Yuting Wang, Levon Pogosian, Gong-Bo Zhao +1
We reconstruct evolution of the dark energy (DE) density using a nonparametric Bayesian approach from a combination of latest observational data. We caution against parameterizing…
Searching for Primordial Magnetic Fields with CMB B-modes
Levon Pogosian, Alex Zucca
Was the primordial universe magnetized? The answer to this question would help explain the origin of micro-Gauss strength magnetic fields observed in galaxies. It is also of fundam…