120 citations · 467 across the 11 of their papers we have counts for
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hep-ph2011★ 48 cited
Dark radiation from the axino solution of the gravitino problem
Jasper Hasenkamp
Current observations of the cosmic microwave background could confirm an increase in the radiation energy density after primordial nucleosynthesis but before photon decoupling. We…
gr-qc2011
Testing Superstring Theories with Gravitational Waves
Ruth Durrer, Jasper Hasenkamp
We provide a simple transfer function that determines the effect of an early matter dominated era on the gravitational wave background and show that a large class of compactificati…
hep-ph2011★ 16 cited
Dark and visible matter with broken R-parity and the axion multiplet
Jasper Hasenkamp, Jörn Kersten
A small breaking of R-parity reconciles thermal leptogenesis, gravitino dark matter and primordial nucleosynthesis. We find that the same breaking relaxes cosmological bounds on th…