18 citations · 72 across the 14 of their papers we have counts for
4 papers · 1 filter
Macroscopic dark matter constraints for extended mass functions
Zachary S. C. Picker, Andrew Buchanan, Melissa Diamond +1
We compile and recompute a subset of the landscape of constraints for macroscopic dark matter (macros), explicitly including the dependence on the fraction of dark matter in macros…
Neutrino masses, matter-antimatter asymmetry, dark matter, and supermassive black hole formation explained with Majorons
Yifan Lu, Zachary S. C. Picker, Alexander Kusenko +1
The spontaneous breaking of a global lepton number symmetry can result in a (pseudo) Nambu-Goldstone boson known as the Majoron. We study a singlet Majoron model that couples to tw…
Cosmology of the companion-axion model: dark matter, gravitational waves, and primordial black holes
Zhe Chen, Archil Kobakhidze, Ciaran A. J. O'Hare +2
The companion-axion model introduces a second QCD axion to rescue the Peccei-Quinn solution to the strong-CP problem from the effects of colored gravitational instantons. As in sin…
Phenomenology of the companion-axion model: photon couplings
Zhe Chen, Archil Kobakhidze, Ciaran A. J. O'Hare +2
We study the phenomenology of the 'companion-axion model' consisting of two coupled QCD axions. The second axion is required to rescue the Peccei-Quinn solution to the strong-CP pr…