624 citations · 9.9k across the 108 of their papers we have counts for
5 papers · 2 filters
Dynamic Freeze-In: Impact of Thermal Masses and Cosmological Phase Transitions on Dark Matter Production
Michael J. Baker, Moritz Breitbach, Joachim Kopp +1
The cosmological abundance of dark matter can be significantly influenced by the temperature dependence of particle masses and vacuum expectation values. We illustrate this point i…
Return of the X-rays: A New Hope for Fermionic Dark Matter at the keV Scale
Vedran Brdar, Joachim Kopp, Jia Liu +1
A long time ago (in 2014), in galaxies and galaxy clusters far, far away, several groups have reported hints for a yet unidentified line in astrophysical X-ray signals at an energy…
Sterile Neutrinos or Flux Uncertainties? - Status of the Reactor Anti-Neutrino Anomaly
Mona Dentler, Álvaro Hernández-Cabezudo, Joachim Kopp +2
The discrepancy between the predicted and observed reactor anti-neutrino flux, known as the reactor anti-neutrino anomaly, continues to intrigue. The recent discovery of…
Fuzzy Dark Matter and Non-Standard Neutrino Interactions
Vedran Brdar, Joachim Kopp, Jia Liu +2
We discuss novel ways in which neutrino oscillation experiments can probe dark matter. In particular, we focus on interactions between neutrinos and ultra-light ("fuzzy") dark matt…
Collective neutrino oscillations and neutrino wave packets
Evgeny Akhmedov, Joachim Kopp, Manfred Lindner
Effects of decoherence by wave packet separation on collective neutrino oscillations in dense neutrino gases are considered. We estimate the length of the wave packets of neutrinos…