Xi-Bin Li

Pseudoscalar Yukawa coupling induced helical asymmetry in fermionic preheating

Abstract In this study, we investigate the fermionic helical asymmetry during preheating by introducing a model in which the Dirac field $$\psi $$ ψ couples to the scalar inflaton $$\phi $$ ϕ directly through the pseudoscalar Yukawa mechanism described by the term $$- g\frac{\phi...