Time-reversal violating rotation of polarization plane of light in gas   placed in the electric field
  The rotation of polarization plane of light in a gas placed in the electric field is considered. Different mechanisms that cause this phenomenon are investigated. Angle of polarization plane rotation for transition 6S_{1/2} -> 7S_{1/2} in cesium is estimated. The possibility to observe this effect in experiment is discussed. 
V. G. Baryshevsky, D. N. Matsukevich