296 citations · 2.5k across the 35 of their papers we have counts for
5 papers · 1 filter
Axion properties in GUTs
Anne Ernst, Luca Di Luzio, Andreas Ringwald +1
We summarize recent studies of realistic nonsupersymmetric Grand Unified Theories (GUTs) extended with a global symmetry, so as to accommodate the axion solution to…
Limits on Electroweak Instanton-Induced Processes with Multiple Boson Production
Andreas Ringwald, Kazuki Sakurai, Bryan R. Webber
Recently, the CMS collaboration has reported their search for electroweak instanton-like processes with anomalous violation assuming multi-fermion but zero-boson final states…
Axion mass prediction from minimal grand unification
Luca Di Luzio, Andreas Ringwald, Carlos Tamarit
We propose a minimal realization of the Peccei Quinn mechanism in a realistic SU(5) model, where the axion mass is directly connected to the grand-unification scale. By taking into…
Measuring the Boiling Point of the Vacuum of Quantum Electrodynamics
Anthony Hartin, Andreas Ringwald, Natalia Tapia
It is a long-standing non-trivial prediction of quantum electrodynamics that its vacuum is unstable in the background of a static, spatially uniform electric field and, in principl…
Axion mass in the case of post-inflationary Peccei-Quinn symmetry breaking
Andreas Ringwald
The axion not only solves the strong CP puzzle, but it also may be the main constituent of cold dark matter. We review the axion dark matter predictions for the case that the Pecce…