Demonstration of the PVED in Phase Transition of D-/L-Alanine & Valine

Abstract

The parity-violating electroweak neutral current (mediated by the Z(0) boson) has been suggested as the main physical force underlying the observed homochirality. We show experimentally that the parity violating in crystals of alanine and valine enantiomer, induced by the electroweak interaction of the conduction electrons with the nuclei of the lattice, can give rise to an enantiomeric PVED in a second order a, phase transition driven by the electron spin reversal of a hydrogen of the asymmetric center under critical temperature. This effect may have played a role in the origin of the homochirality.