35 citations · 35 across the 3 of their papers we have counts for
4 papers
Revisiting Critical Higgs Inflation: Electroweak Couplings, CMB Observables, and Perturbative Unitarity
Sarah R. Geller, Sol Gutierrez-Lara, David I. Kaiser +1
We revisit the scenario of critical Higgs inflation, in which inflation is driven by the Standard Model Higgs boson with parameters chosen close to a critical point, giving rise to…
Primordial Black Holes from Inflation with a Spectator Field
Dario L. Lorenzoni, Sarah R. Geller, David I. Kaiser +1
How is the production of primordial black holes (PBHs) in single-field models of inflation impacted by the presence of additional scalar fields? We consider the effect of a spectat…
Resilience of Primordial Black Hole Formation from Inflation with a Light Spectator Field
Dario L. Lorenzoni, Sarah R. Geller, Zachary Ireland +3
Scalar fields are ubiquitous in theories of high-energy physics. In the context of cosmic inflation, this suggests the existence of spectator fields, which provide a subdominant so…
Close encounters of the primordial kind: a new observable for primordial black holes as dark matter
Tung X. Tran, Sarah R. Geller, Benjamin V. Lehmann +1
Primordial black holes (PBHs) remain a viable dark matter candidate in the asteroid-mass range. We point out that in this scenario, the PBH abundance would be large enough for at l…