The Phenomena of the Time-violating Photon Polarization Plane and Neutron Spin Rotation by a Diffraction Grating. New Methods of Measuring of the Time-violating Interactions

It is shown, that the new phenomena of the T-violating photon polarization plane and neutron spin rotation appear under diffraction in a noncentrosymmetrical diffraction grating. The equations describing the T-violating photon scattering by a diffraction grating and neutron interaction with noncentrosymmetrical crystal have been obtained. These phenomena may be used for time-violating interactions investigation. THE PHENOMENA OF THE TIME-VIOLATING PHOTON POLARIZATION PLANE AND NEUTRON SPIN ROTATION BY A DIFFRACTION GRATING. NEW METHODS OF MEASURING OF THE TIME-VIOLATING INTERACTIONS. V.G.BARYSHEVSKY Nuclear Problems Institute, Bobruiskaya Str 11, Minsk 220080 Belarus. Electronic address: [email protected] Since the discovery of the CP-violation in decay of K-mesons (Christenson, Cronin, Fitch and Turlay (1964)), a few attempts have been undertaken to observe experimentally this phenomenon in different processes . However, that experiments have not been successful. At the present time, novel more precise experimental schemes are actively discussed: observation of the atom (Lamoreaux (1989)) and neutron (Forte (1983), Fedorov , Voronin and Lapin (1992)) electric dipole moment; the T(time)-violating atom’s (molecule’s) spin rotation in a laser wave and the T-violating refraction of a photon in a polarized atomic or molecular gas (Baryshevsky (1993, 1994)). 1 P and T-violating photon polarisation plane rotation. In accordance with Baryshevsky (1993, 1994) the P(parity)and T-violating dielectric permittivity tensor εik (for caseεik − δik ≪ 1 ) is given by εik = δik + χik = δik + 4πρ k2 fik (0) , (1.1) where χik is the polarizability tensor of the matter, ρ is the number of atoms (molecules) per cm , k the photon wave number. The quantity fik (0) is the tensor part of the zero-angle amplitude of elastic coherent scattering of a photon by an atom (molecule) f (0) = fik (0) e ′ ∗ ek. Here ~e and ~e ′ are the polarization vectors of initial and scattered photons. Indices i=1,2,3 are refered to coordinates x, y, z, respectively, repeated indices imply summations. At zero external electric and magnetic fields, the amplitude fik (0) can be written as fik (0) = f ev ik (0) + f P,T ik (0) = f ev ik (0) + ω c2 [iβ s εiklnl − β υ (〈 ~ J 〉