An off-diagonal thermal potential from sterile neutrino self-interactions generates the baryon asymmetry at lower order in the Yukawa coupling, boosting it and relaxing the mass degeneracy required in vanilla ARS leptogenesis.
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Freeze-in leptogenesis with sterile neutrino self-interactions
An off-diagonal thermal potential from sterile neutrino self-interactions generates the baryon asymmetry at lower order in the Yukawa coupling, boosting it and relaxing the mass degeneracy required in vanilla ARS leptogenesis.