125 citations · 454 across the 11 of their papers we have counts for
12 papers
Pulsar timing array sensitivity to anisotropies in the gravitational wave background
Paul Frederik Depta, Valerie Domcke, Gabriele Franciolini +1
Pulsar Timing Array (PTA) observations have recently gathered substantial evidence for the existence of a gravitational wave background in the nHz frequency band. Searching for ani…
Does NANOGrav observe a dark sector phase transition?
Torsten Bringmann, Paul Frederik Depta, Thomas Konstandin +2
Gravitational waves from a first-order cosmological phase transition, at temperatures at the MeV-scale, would arguably be the most exciting explanation of the common red spectrum r…
Signals of merging supermassive primordial black holes in pulsar timing arrays
Paul Frederik Depta, Kai Schmidt-Hoberg, Pedro Schwaller +1
In this work we evaluate whether the gravitational wave background recently observed by a number of different pulsar timing arrays could be due to merging primordial supermassive b…
A new life for sterile neutrino dark matter after the pandemic
Torsten Bringmann, Paul Frederik Depta, Marco Hufnagel +3
We propose a novel mechanism to generate sterile neutrinos in the early Universe, by converting ordinary neutrinos in scattering processes . After init…
Dark Matter from Exponential Growth
Torsten Bringmann, Paul Frederik Depta, Marco Hufnagel +2
We propose a novel mechanism for the production of dark matter (DM) from a thermal bath, based on the idea that DM particles can transform heat bath particles : $χψ\rightarr…
ACROPOLIS: A generiC fRamework fOr Photodisintegration Of LIght elementS
Paul Frederik Depta, Marco Hufnagel, Kai Schmidt-Hoberg
The remarkable agreement between observations of the primordial light element abundances and the corresponding theoretical predictions within the standard cosmological history prov…
Updated BBN constraints on electromagnetic decays of MeV-scale particles
Paul Frederik Depta, Marco Hufnagel, Kai Schmidt-Hoberg
In this work, we revise and update model-independent constraints from Big Bang Nucleosynthesis on MeV-scale particles which decay into photons and/or electron-positron pairs. W…
Precise dark matter relic abundance in decoupled sectors
Torsten Bringmann, Paul Frederik Depta, Marco Hufnagel +1
Dark matter (DM) as a thermal relic of the primordial plasma is increasingly pressured by direct and indirect searches, while the same production mechanism in a decoupled sector is…
Complete leading-order standard model corrections to quantum leptogenesis
Paul Frederik Depta, Andreas Halsch, Janine Hütig +2
Thermal leptogenesis, in the framework of the standard model with three additional heavy Majorana neutrinos, provides an attractive scenario to explain the observed baryon asymmetr…
Robust cosmological constraints on axion-like particles
Paul Frederik Depta, Marco Hufnagel, Kai Schmidt-Hoberg
Axion-like particles with masses in the keV-GeV range have a profound impact on the cosmological evolution of our Universe, in particular on the abundance of light elements produce…
BBN constraints on the annihilation of MeV-scale dark matter
Paul Frederik Depta, Marco Hufnagel, Kai Schmidt-Hoberg +1
Thermal dark matter at the MeV scale faces stringent bounds from a variety of cosmological probes. Here we perform a detailed evaluation of BBN bounds on the annihilation cross sec…
Strong constraints on clustered primordial black holes as dark matter
Torsten Bringmann, Paul Frederik Depta, Valerie Domcke +1
The idea of dark matter in the form of primordial black holes has seen a recent revival triggered by the LIGO detection of gravitational waves from binary black hole mergers. In th…