101 citations · 792 across the 54 of their papers we have counts for
5 papers · 1 filter
Inhomogeneous cosmological models and observations
Antonio Enea Romano
We address some recent erroneous claim that observations are difficult to accommodate with LTB cosmological models, showing how to construct solutions in agreement with an ar…
Discrete gravity from statistical mechanics
Antonio Enea Romano
We show how to construct space time lattices with a Regge action proportional to the energy of a given Ising or Potts model macrostate. This allows to take advantage of the existen…
Large and strong scale dependent bispectrum in single field inflation from a sharp feature in the mass
Frederico Arroja, Antonio Enea Romano, Misao Sasaki
We study an inflationary model driven by a single minimally coupled standard kinetic term scalar field with a step in its mass modeled by an Heaviside step function. We present an…
Can smooth LTB models mimicking the cosmological constant for the luminosity distance also satisfy the age constraint?
Antonio Enea Romano
The central smoothness of the functions defining a LTB solution plays a crucial role in their ability to mimick the effects of the cosmological constant. So far attention has been…
Corrections to the apparent value of the cosmological constant due to local inhomogeneities
Antonio Enea Romano, Pisin Chen
Supernovae observations strongly support the presence of a cosmological constant, but its value, which we will call apparent, is normally determined assuming that the Universe can…