206 citations · 587 across the 9 of their papers we have counts for
8 papers · 1 filter
Quantum Effects during Inflation
R. P. Woodard
The expansion of spacetime alters the energy-time uncertainty principle, allowing virtual particles to persist longer than in flat space. For a given expansion the effect is larges…
The Force of Gravity from a Lagrangian containing Inverse Powers of the Ricci Scalar
M. E. Soussa, R. P. Woodard
We determine the gravitational response to a diffuse source, in a locally de Sitter background, of a class of theories which modify the Einstein-Hilbert action by adding a term pro…
Production of Massless Fermions during Inflation
T. Prokopec, R. P. Woodard
We compute the one loop self energy, in a locally de Sitter background, for a massless fermion which is Yukawa-coupled to a massless, minimally coupled scalar. We then solve the mo…
Fermion Self-Energy during Inflation
R. P. Woodard
I report on work done with Tomislav Prokopec (Heidelberg, CERN). We computed the one loop self-energy of a massless fermion during inflation. When the fermion is free it experience…
Improved Estimates of Cosmological Perturbations
N. C. Tsamis, R. P. Woodard
We recently derived exact solutions for the scalar, vector and tensor mode functions of a single, minimally coupled scalar plus gravity in an arbitrary homogeneous and isotropic ba…
General plane wave mode functions for scalar-driven cosmology
N. C. Tsamis, R. P. Woodard
We give a solution for plane wave scalar, vector and tensor mode functions in the presence of any homogeneous, isotropic and spatially flat cosmology which is driven by a single, m…