Gravitational Leptogenesis
天体物理学
2008-11-26 v1 广义相对论与量子宇宙学
高能物理 - 唯象学
摘要
We introduce a dimension five CP violating coupling between the Ricci scalar and fermions. This operator splits the energy level between neutrinos and anti-neutrinos and can generate a lepton-asymmetry in the the radiation era if heavy Majorana neutrinos decouple at the GUT scale. This operator can also generate a lepton asymmetry during warm inflation if the light neutrinos have a Majorana mass m_\nu \simeq 0.25 eV which is observable in double beta decay experiments.
引用
@article{arxiv.astro-ph/0611905,
title = {Gravitational Leptogenesis},
author = {Gaetano Lambiase and Subhendra Mohanty},
journal= {arXiv preprint arXiv:astro-ph/0611905},
year = {2008}
}
备注
4 pages, no figures