From the 1 of 7 linked papers with an AI index.
7 papers
Spectator Axions in String Inflation and Primordial Black Holes
Michele Cicoli, Dario L. Lorenzoni, Evan McDonough +1
The paper examines how light spectator axions during Fibre Inflation in string theory influence the generation of primordial black holes, showing that axions with moderately large…
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…
Creation of spin-3/2 dark matter via cosmological gravitational particle production
Edward W. Kolb, Andrew J. Long, Evan McDonough +1
We study the cosmological gravitational particle production (CGPP) of spin-3/2 particles during and after cosmic inflation, and map the parameter space that can realize the observe…
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…
Do Observations Prefer Thawing Quintessence?
Guillaume Payeur, Evan McDonough, Robert Brandenberger
In light of recent observations by the Dark Energy Spectroscopic Instrument (DESI), we study evidence for thawing quintessence over a cosmological constant as dark energy, with emp…
Superheavy Dark Matter from the String Theory Axiverse
Siyang Ling, Andrew J. Long, Evan McDonough +1
We propose heavy axions as a natural superheavy dark matter candidate in string theory, with the relic density of dark matter originating in quantum fluctuations during cosmic infl…