The Affleck-Dine Curvaton

Journal Article · Thu Oct 17 00:00:00 EDT 2024 · No journal information

DOI:https://doi.org/10.48550/arXiv.2410.13712· OSTI ID:2477338

Ireland, Aurora ^[1]; Krnjaic, Gordan ^[2]; Okawa, Takuya ^[3]

---

1. Stanford U., ITP
2. Fermilab; Chicago U., KICP; Chicago U., Astron. Astrophys. Ctr.
3. Fermilab; WUSTL

The Standard Model of particle physics does not explain the origin of the universe's baryon asymmetry or its primordial fluctuations. The Affleck-Dine mechanism is a well-motivated scenario for generating the baryon asymmetry through the post-inflationary dynamics of a complex scalar field with baryon number. The curvaton mechanism is a popular approach for producing curvature perturbations through the dynamics of a light spectator field which decays after inflation. We demonstrate that the same complex field can viably perform both roles without any modifications to the minimal realization of Affleck-Dine baryogenesis. This scenario can also accommodate appreciable levels of primordial non-Gaussianity, beyond those achievable with only a real-valued curvaton field, and may be observable with future CMB experiments.

• Research Organization: Stanford U., ITP; WUSTL; Chicago U., KICP; Chicago U., Astron. Astrophys. Ctr.; Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
• Sponsoring Organization: US Department of Energy
• DOE Contract Number: 89243024CSC000002; AC02-07CH11359
• OSTI ID: 2477338
• Report Number(s): FERMILAB-PUB-24-0744-T; arXiv:2410.13712; oai:inspirehep.net:2840928
• Journal Information: No journal information, Journal Name: No journal information
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
79 ASTRONOMY AND ASTROPHYSICS