528 citations · 7.5k across the 142 of their papers we have counts for
6 papers · 1 filter
Breaking of scaling symmetry by massless scalar on de Sitter
D. Glavan, S. P. Miao, T. Prokopec +1
We study the response of a classical massless minimally coupled scalar to a static point scalar charge on de Sitter. By considering explicit solutions of the problem we conclude th…
Graviton Propagator in a 2-Parameter Family of de Sitter Breaking Gauges
D. Glavan, S. P. Miao, T. Prokopec +1
We formulate the graviton propagator on de Sitter background in a 2-parameter family of simple gauges which break de Sitter invariance. Explicit results are derived for the first o…
Ricci Subtraction for Cosmological Coleman-Weinberg Potentials
S. P. Miao, S. Park, R. P. Woodard
We reconsider the fine-tuning problem of scalar-driven inflation arising from the need to couple the inflaton to ordinary matter in order to make reheating efficient. Quantum fluct…
The Inflaton Effective Potential for General
A. Kyriazis, S. P. Miao, N. C. Tsamis +1
We develop an analytic approximation for the coincidence limit of a massive scalar propagator in an arbitrary spatially flat, homogeneous and isotropic geometry. We employ this to…
Non-Gaussianity from Features
S. Basu, D. J. Brooker, N. C. Tsamis +1
The strongest non-Gaussianity in single-scalar potential models of inflation is associated with features in the power spectrum. We stress the importance of accurately modelling the…
Nonlocal Cosmology II --- Cosmic acceleration without fine tuning or dark energy
S. Deser, R. P. Woodard
We present an improved version of our original cosmological model to explain the current phase of cosmological acceleration without resorting to a cosmological constant or any othe…