Understanding parity violation in molecular systems

Parity-violation energy ${(E}_{\mathrm{PV}})$ due to weak nuclear interactions between nucleons and electrons in chiral molecular systems provides a fundamental tool to verify our understanding of electronic behavior in complex systems. We used both a relativistic and a nonrelativistic approach to study a number of simple molecules and analyze the corresponding $E_{\mathrm{PV}}$ in terms of intuitive electrodynamic concepts. We developed a qualitative model to predict the sign of $E_{\mathrm{PV}}$ and its behavior against selected geometric distortions. Our model provides a valuable tool to screen large sets of molecules and select interesting candidates for more expensive investigations.