125 citations · 757 across the 15 of their papers we have counts for
16 papers
Observational evidence for cosmological coupling of black holes and its implications for an astrophysical source of dark energy
Duncan Farrah, Kevin S. Croker, Gregory Tarlé +16
Observations have found black holes spanning ten orders of magnitude in mass across most of cosmic history. The Kerr black hole solution is however provisional as its behavior at i…
Dark Black Holes in the Mass Gap
Nicolas Fernandez, Akshay Ghalsasi, Stefano Profumo +2
In the standard picture of stellar evolution, pair-instability -- the energy loss in stellar cores due to electron-positron pair production -- is predicted to prevent the collapse…
Snowmass2021 Cosmic Frontier: The landscape of low-threshold dark matter direct detection in the next decade
Rouven Essig, Graham K. Giovanetti, Noah Kurinsky +90
The search for particle-like dark matter with meV-to-GeV masses has developed rapidly in the past few years. We summarize the science case for these searches, the recent progress,…
Freeze-in, glaciation, and UV sensitivity from light mediators
Nicolas Fernandez, Yonatan Kahn, Jessie Shelton
Dark matter (DM) freeze-in through a light mediator is an appealing model with excellent detection prospects at current and future experiments. Light mediator freeze-in is UV-insen…
Gravitational Wave and CMB Probes of Axion Kination
Raymond T. Co, David Dunsky, Nicolas Fernandez +4
Rotations of an axion field in field space provide a natural origin for an era of kination domination, where the energy density is dominated by the kinetic term of the axion field,…
Comments on Axions, Domain Walls, and Cosmic Strings
Michael Dine, Nicolas Fernandez, Akshay Ghalsasi +1
Axions have for some time been considered a plausible candidate for dark matter. They can be produced through misalignment, but it has been argued that when inflation occurs before…
Lepto-Axiogenesis
Raymond T. Co, Nicolas Fernandez, Akshay Ghalsasi +2
We propose a baryogenenesis mechanism that uses a rotating condensate of a Peccei-Quinn (PQ) symmetry breaking field and the dimension-five operator that gives Majorana neutrino ma…
Reinterpretation of LHC Results for New Physics: Status and Recommendations after Run 2
Waleed Abdallah, Shehu AbdusSalam, Azar Ahmadov +139
We report on the status of efforts to improve the reinterpretation of searches and measurements at the LHC in terms of models for new physics, in the context of the LHC Reinterpret…
Superradiance and the Spins of Black Holes from LIGO and X-ray binaries
Nicolas Fernandez, Akshay Ghalsasi, Stefano Profumo
Measurements of the spin of stellar mass black holes (BHs) are now possible both through LIGO observations of binary BH mergers and for BHs in X-ray binary systems. The spins of BH…
Unraveling the origin of black holes from effective spin measurements with LIGO-Virgo
Nicolas Fernandez, Stefano Profumo
We investigate how to use information on the effective spin parameter of binary black hole mergers from the LIGO-Virgo gravitational wave detections to discriminate the origin of t…
Stability, reheating and leptogenesis
Djuna Croon, Nicolas Fernandez, David McKeen +1
In a minimal model of leptogenesis, the observed baryon asymmetry is realized after high-scale reheating into the lightest sterile neutrino. We consider constraints on this scenari…
Comment on "keV Neutrino Dark Matter in a Fast Expanding Universe" by Biswas et al
Nicolas Fernandez, Stefano Profumo
Biswas et al. found that the thermal relic density of a dark matter particle freezing out while the universe's energy density is dominated by a non-standard extra component , wh…
Dark Matter Freeze-in Production in Fast-Expanding Universes
Francesco D'Eramo, Nicolas Fernandez, Stefano Profumo
If the dark matter is produced in the early universe prior to Big Bang nucleosynthesis, a modified cosmological history can drastically affect the abundance of relic dark matter pa…
When the Universe Expands Too Fast: Relentless Dark Matter
Francesco D'Eramo, Nicolas Fernandez, Stefano Profumo
We consider a modification to the standard cosmological history consisting of introducing a new species whose energy density red-shifts with the scale factor like $ρ_ϕ\prop…
Constraints on Light Dark Matter from Single-Photon Decays of Heavy Quarkonium
Nicolas Fernandez, Ilsoo Seong, Patrick Stengel
We investigate constraints on the interactions of light dark matter with Standard Model quarks in a framework with effective contact operators mediating the decay of heavy flavor b…
Complementary Constraints on Light Dark Matter from Heavy Quarkonium Decays
Nicolas Fernandez, Jason Kumar, Ilsoo Seong +1
We investigate constraints on the properties of light dark matter which can be obtained from analysis of invisible quarkonium decays at high intensity electron-positron colliders i…