Calculation of Parity-Nonconserving Optical Rotation in Atomic Bismuth

Using results of the Weinberg-Salam model, we have calculated in lowest order the magnitude of the optical rotation parameter $\mathrm{Im}\left(\frac{E1\mathrm{}}{M1\mathrm{}}\right)$ in atomic bismuth for the four allowed $M1\mathrm{}$ transitions from the ground state within the configuration $6s^{2}6p^3$. Results based on Dirac-Hartree-Fock orbitals are found to vary significantly according to the form used for the electric dipole operator in the $E1\mathrm{}$ matrix element. This is interpreted as evidence for large correlation effects.