192 citations · 2.3k across the 49 of their papers we have counts for
5 papers · 1 filter
Renormalisation group improvement in the stochastic formalism
Robert J. Hardwick, Tommi Markkanen, Sami Nurmi
We investigate compatibility between the stochastic infrared (IR) resummation of light test fields on inflationary spacetimes and renormalisation group running of the ultra-violet…
Loop corrections and a new test of inflation
Gianmassimo Tasinato, Christian T. Byrnes, Sami Nurmi +1
Inflation is the leading paradigm for explaining the origin of primordial density perturbations and the observed temperature fluctuations of the cosmic microwave background. Howeve…
Inflationary Infrared Divergences: Geometry of the Reheating Surface vs. delta N Formalism
Christian T. Byrnes, Mischa Gerstenlauer, Arthur Hebecker +2
We describe a simple way of incorporating fluctuations of the Hubble scale during the horizon exit of scalar perturbations into the delta N formalism. The dominant effect comes fro…
Kahler potentials for the MSSM inflation and the spectral index
Sami Nurmi
Recently it has been argued that some of the fine-tuning problems of the MSSM inflation associated with the existence of a saddle point along a flat direction may be solved natural…
Supergravity origin of the MSSM inflation
Kari Enqvist, Lotta Mether, Sami Nurmi
We consider the supergravity origin of the recently proposed MSSM inflationary model, which relies on the existence of a saddle point along a dimension six flat direction. We deriv…