The Kerr medium as an SU(2) system: exact solution for spin dampingAdityapuram Sivaraman Vytheeswaran, Kamarajagadda Venkata Sesha Shiv Chaitanya, Prasanta Kumar Panigrahi and Venkatraman SrinivasanEur. Phys. J. B, 87 9 (2014) 207DOI: https://doi.org/10.1140/epjb/e2014-41102-x