5 papers
Nonthermal leptogenesis via cosmological gravitational particle production is tested by inflationary gravitational waves
Tammi Chowdhury, Leah Jenks, Edward W. Kolb +2
We explore the coincidence of scales between cosmic inflation and right-handed neutrinos in seesaw models. We show that inflation models, which will be tested by next-generation CM…
Gravitational-Wave Propagation Through the Axiverse
Leah Jenks, Marc Kamionkowski
We study the effects of oscillating, ultralight scalar and pseudoscalar fields on the propagation of gravitational waves (GWs). We consider two potential couplings of the (pseudo)s…
Higgs Inflation: Particle Factory
Tammi Chowdhury, Leah Jenks, Edward W. Kolb +1
We study cosmological gravitational particle production (CGPP) in Higgs inflation, wherein the inflaton is a scalar field with quartic self-coupling and a nonminimal coupling…
Parity-breaking galaxy 4-point function from lensing by chiral gravitational waves
Keisuke Inomata, Leah Jenks, Marc Kamionkowski
Recent searches for parity breaking in the galaxy four-point correlation function, as well as the prospects for greatly improved sensitivity to parity breaking in forthcoming surve…
Gravitational Particle Production of Scalars: Analytic and Numerical Approaches Including Early Reheating
Leah Jenks, Edward W. Kolb, Keyer Thyme
Cosmological gravitational particle production (GPP) is a generic mechanism by which particles are produced during the inflationary epoch. In this work we consider the GPP of massi…