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342 papers · 1 filter
Probing Bose-enhanced Inflaton Decay with Gravitational Waves
Nicolás Bernal, Quan-feng Wu, Xun-Jie Xu +1
We investigate cosmic reheating dynamics in the presence of a transient condensate formed by bosonic decay products of the inflaton. We show that the emergence of such a condensate…
Cosmology of Gravi-Axions
Stephon Alexander, Gregory Gabadadze, Leah Jenks +1
We show how a mass term for gravitational axions (''gravi-axions'') with a Chern-Simons coupling to gravity can naturally arise due to non-perturbative contributions from Euclidean…
Cosmic Overture Echoed in a Stellar Final Act: Implications of Nanohertz Gravitational Waves for Core Collapse Supernova Neutrinos
Hooman Davoudiasl, Peter B. Denton, Anna M. Suliga
The growing evidence for nanohertz gravitational waves, from NANOGrav and other observations, may be pointing to a cosmological first-order phase transition at temperatures of $\ma…
Flavor hierarchies with nonminimal irreducible representations
Hannah Banks, Graeme Crawford, Matthew McCullough +1
We propose a new class of flavour models in which the spurion which breaks Standard Model flavour symmetries transforms in a non-minimal representation. Hierarchies in fermion mass…
Lepton Flavor Violation: From Muon Decays to Muon Colliders
Pouya Asadi, Hengameh Bagherian, Katherine Fraser +2
We investigate the unique potential of a high-energy muon collider to probe lepton-flavor-violating signals arising from physics beyond the Standard Model (SM). Low-energy, precisi…
Cosmic-ray cooling by dark matter in astrophysical jets
Dimitrios Kantzas, Francesca Calore, Marco Chianese
Astrophysical jets from powerful active galactic nuclei (AGN) have recently been proposed as promising probes of dark matter (DM) in the sub-GeV mass range. AGN launch relativistic…