  Time-reversal and inversion breaking in the pseudogap region of the cuprate
compounds have been proposed and detected by means of ARPES in the compound
Bi-2212. Given the implication of the effect in the physics of the cuprate
superconductors, it is important to check the conclusions through quite
independent experimental techniques. We show how time-reversal and inversion
breaking may be revealed in the Cuprates through resonant x-ray scattering and
through non-reciprocal or magnetochiral dichroism.
