Calculation of parity and time invariance violation in the radium atom - art. no. 062509

Parity (P) and time (T) invariance violating effects in the Ra atom are str ongly enhanced due to close states of opposite parity, the large nuclear ch arge Z and the collective nature of (P,T)-odd nuclear moments. We have perf ormed calculations of the atomic electric dipole moments (EDM) produced by the electron EDM and the nuclear magnetic quadrupole and Schiff moments. We have also calculated the effects of parity nonconservation produced by the nuclear anapole moment and the weak charge. Our results show that as a rul e the values of these effects are much larger than those considered so far in other atoms (enhancement is up to 10(5) times).