Crosspolar performance of an elliptical corrugated-horn antenna
Abstract
The ultra-slow-roll (USR) inflation represents a class of single-field models with sharp deceleration of the rolling dynamics on small scales, leading to a significantly enhanced power spectrum of the curvature perturbations and primordial black hole (PBH) formation. Such a sharp transition of the inflationary background can trigger the coherent motion of scalar condensates with effective potentials governed by the rolling rate of the inflaton field. We show that a scalar condensate carrying (a combination of) baryon or lepton number can achieve successful baryogenesis through the Affleck-Dine mechanism from unconventional initial conditions excited by the USR transition. Viable parameter space for creating the correct baryon asymmetry of the Universe naturally incorporates the specific limit for PBHs to contribute significantly to dark matter, shedding light on the cosmic coincidence problem between the baryon and dark matter densities today.
- Publication:
-
Journal of High Energy Physics
- Pub Date:
- January 2022
- DOI:
- 10.1007/JHEP01(2022)015
- arXiv:
- arXiv:2109.00118
- Bibcode:
- 2022JHEP...01..015W
- Keywords:
-
- Cosmology of Theories beyond the SM;
- Effective Field Theories;
- High Energy Physics - Phenomenology;
- Astrophysics - Cosmology and Nongalactic Astrophysics;
- High Energy Physics - Theory
- E-Print:
- 32 + 2 pages, 9 figures, addressed the correlation length of local baryon asymmetry, version matched with publication