401 citations · 1.2k across the 33 of their papers we have counts for
3 papers · 1 filter
Gravitational wave probes of axion-like particles
Camila S. Machado, Wolfram Ratzinger, Pedro Schwaller +1
We have recently shown that axions and axion-like particles (ALPs) may emit an observable stochastic gravitational wave (GW) background when they begin to oscillate in the early un…
Gravitational Imprints of Flavor Hierarchies
Admir Greljo, Toby Opferkuch, Ben A. Stefanek
The mass hierarchy among the three generations of quarks and charged leptons is one of the greatest mysteries in particle physics. In various flavor models, the origin of this phen…
Ricci Reheating
Toby Opferkuch, Pedro Schwaller, Ben A. Stefanek
We present a model for viable gravitational reheating involving a scalar field directly coupled to the Ricci curvature scalar. Crucial to the model is a period of kination after in…