Interpretation of Experimental Results

Dynamics of a tensor polarization of particles and nuclei and its influence on the spin motion in external fields

“…While the effect is small, it cannot be neglected in some cases (see Refs. [1][2][3][4][5]). Nevertheless, its influence can be significant only in special cases like deuteron EDM experiments or experiments specially designed to measure the tensor magnetic and electric polarizabilities.…”

“…The Pauli matrices together with the unit matrix describe the spin of a Dirac particle and generate an irreducible representation of the SU (2) group. Algebraically, the SU (2) group is a double cover of the three-dimensional rotation group SO for the deuteron EDM should take into account an existence of the spin tensor interactions [1][2][3][4][5][6].…”

“…It has been ascertained in Refs. [1][2][3][4][5][6] that the tensor interactions lead to mutual transformations between the vector and tensor polarizations. We can show that this property is general.…”

“…The effect is rather important for the deuteron EDM experiment (see Refs. [1][2][3][4][5][6]). Thus, the tensor interactions can influence the spin motion.…”

“…Investigations of dynamics of tensor polarization of light nuclei (e.g., the deuteron with spin 1) allow one to predict and to describe some new effects [1][2][3][4][5][6][7][8]. These effects are conditioned either by quadratic in spin interactions of deuteron [1][2][3][4][5][6][7] or by quantum beats in positronium [8]. To get a basic understanding of polarization effects, it is necessary to consider linear in spin interactions of tensor-polarized particles and nuclei.…”