782 citations · 4.2k across the 87 of their papers we have counts for
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Infrared Correlations in de Sitter Space: Field Theoretic vs. Stochastic Approach
Bjorn Garbrecht, Gerasimos Rigopoulos, Yi Zhu
We consider massive λϕ^4 theory in de Sitter background. The mass of the scalar field ϕis chosen small enough, such that the amplification of superhorizon momentum modes leads to a…
Cuts, Cancellations and the Closed Time Path: The Soft Leptogenesis Example
Bjorn Garbrecht, Michael J. Ramsey-Musolf
By including all leading quantum-statistical effects at finite temperature, we show that no net asymmetry of leptons and sleptons is generated from soft leptogenesis, save the poss…
Non-Gaussianities and Curvature Perturbations from Hybrid Inflation
Sébastien Clesse, Björn Garbrecht, Yi Zhu
For the original hybrid inflation as well as the supersymmetric F-term and D-term hybrid models, we calculate the level of non-gaussianities and the power spectrum of curvature per…
Scattering Rates For Leptogenesis: Damping of Lepton Flavour Coherence and Production of Singlet Neutrinos
Bjorn Garbrecht, Frank Glowna, Pedro Schwaller
Using the Closed-Time-Path approach, we perform a systematic leading order calculation of the relaxation rate of flavour correlations of left-handed Standard Model leptons. This qu…
Right-Handed Neutrino Production at Finite Temperature: Radiative Corrections, Soft and Collinear Divergences
Bjorn Garbrecht, Frank Glowna, Matti Herranen
The production and decay rate of massive sterile neutrinos at finite temperature receives next-to-leading order corrections from the gauge interactions of lepton and Higgs doublets…