Leptogenesis from Gravity Waves in Models of Inflation.

Alexander, S. H. S. ; Peskin, M. E.

Technical Information Center Oak Ridge Tennessee

关键词: Leptons;    Gravity waves;    Antimatter;    Neutrinos;    Polarization;   

RP-ID  :  DE2004826770

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

We present a new mechanism for creating the observed cosmic matter-antimatter asymmetry which satisfies all three Sakharov conditions from one common thread, gravitational waves. We generate lepton number through the gravitational anomaly in the lepton number current. The source term comes from elliptically polarizated gravity waves that are produced during inflation if the inflaton field contains a CP-odd component. In simple inflationary scenarios, the generated matter asymmetry is very small. We describe some special conditions in which our mechanism can give a matter asymmetry of realistic size.