Rotational bands are commonplace in the spectra of atomic nuclei. Inspired by early descriptions these quadrupole deformations a liquid drop, Elliott constructed discrete nucleon representations $\mathrm{SU}(3)$ from fermionic creation and annihilation operators. Ever since, Elliott's model has been foundational to rotation Later work, however, suggested symplectic extension $\mathrm{Sp}(3,R)$ ...

We generalized the semiclassical path integral method originally used in the D'yakonov-Perel' mechanism to study the spin relaxation of the Elliott-Yafet mechanism in low-dimensional systems. In quantum wells, the spin properties calculated by this method confirmed the experimental results. In two-dimensional narrow wires, size and impurity effects on the Elliott-Yafet relaxation were predicted...