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Updated: Aug 9, 2026

Setting Limits on Supersymmetry Using Simplified Models
Published on: November 15, 2013
Leptogenesis from spin-gravity coupling following inflation
Subhendra Mohanty1, A R Prasanna, G Lambiase
1Physical Research Laboratory, Navrangpura, Ahmedabad 380 009, India.
Abstract:
The energy levels of the left- and the right-handed neutrinos are split in the background of gravitational waves generated during inflation, which, in presence of lepton-number-violating interactions, gives rise to a net lepton asymmetry at equilibrium. Lepton number violation is achieved by the same dimension five operator which gives rise to neutrino masses after electroweak symmetry breaking. A net baryon asymmetry of the same magnitude can be generated from this lepton asymmetry by electroweak sphaleron processes.
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