284 citations · 2.3k across the 55 of their papers we have counts for
6 papers · 1 filter
Probing de Sitter from the horizon
Mehrdad Mirbabayi, Flavio Riccardi
In a QFT on de Sitter background, one can study correlators between fields pushed to the future and past horizons of a comoving observer. This is a neat probe of the physics in the…
A lower bound on dark matter mass
Mustafa A. Amin, Mehrdad Mirbabayi
We argue that there is a lower bound of order eV on dark matter mass if it is produced after inflation via a process with finite correlation length. We rely on non-detec…
A comment about the cosmology on a bubble wall
Mehrdad Mirbabayi
The interface between a big bubble of true AdS vacuum expanding inside a false AdS vacuum is a model of an inflating dimensional universe. It looks like an interestin…
Snowmass Theory Frontier: Effective Field Theory
Matthew Baumgart, Fady Bishara, Tomas Brauner +34
We summarize recent progress in the development, application, and understanding of effective field theories and highlight promising directions for future research. This Report is p…
Shapes of non-Gaussianity in warm inflation
Mehrdad Mirbabayi, Andrei Gruzinov
Sphaleron heating has been recently proposed as a mechanism to realize warm inflation when inflaton is an axion coupled to pure Yang-Mills. As a result of heating, there is a frict…
Snowmass White Paper: Effective Field Theories in Cosmology
Giovanni Cabass, Mikhail M. Ivanov, Matthew Lewandowski +2
Small fluctuations around homogeneous and isotropic expanding backgrounds are the main object of study in cosmology. Their origin and evolution is sensitive to the physical process…