3 papers
hep-ph2026
Gravitational Wave-Induced Freeze-In of Fermionic Dark Matter
Azadeh Maleknejad, Joachim Kopp
The minimal coupling of massless fermions to gravity does not allow for their gravitational production solely based on the expansion of the Universe. We argue that this changes in…
physics.ins-det2025
The QTF-Backbone: Proposal for a Nationwide Optical Fibre Backbone in Germany for Quantum Technology and Time and Frequency Metrology
Klaus Blaum, Peter Kaufmann, Jochen Kronjäger +168
The recent breakthroughs in the distribution of quantum information and high-precision time and frequency (T&F) signals over long-haul optical fibre networks have transformative po…
hep-th2024
Weyl Fermion Creation by Cosmological Gravitational Wave Background at 1-loop
Azadeh Maleknejad, Joachim Kopp
Weyl fermions of spin minimally coupled to Einstein's gravity in 4 dimensions cannot be produced purely gravitationally in an expanding Universe at tree level. Surprising…