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Updated: Aug 9, 2026

Setting Limits on Supersymmetry Using Simplified Models
Published on: November 15, 2013
Leptogenesis from gravity waves in models of inflation
Stephon H S Alexander1, Michael E Peskin, M M Sheikh-Jabbari
1Stanford Linear Accelerator Center, Post Office Box 20450, Stanford, California 94309, USA.
Abstract:
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 polarized gravity waves that are produced during inflation if the inflaton field contains a CP-odd component. The amount of matter asymmetry generated in our model can be of realistic size for the parameters within the range of some inflationary scenarios and grand unified theories.
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