2003/11/17 by Ernesto P. Danieli, Horacio M. Pastawski, Patricia R. Levstein
Biochemistry, Genetics and Molecular Biology · Chemistry · Physics and Astronomy · #Advanced NMR Techniques and Applications #Electron Spin Resonance Studies #Molecular spectroscopy and chirality #cond-mat.mes-hall
paper · pdf · doi:10.1016/j.cplett.2003.11.104
13 pages, 3 figures
arxiv created 2003/11/17 · openalex publication_date 2004/01/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We formulate the many-body spin dynamics at high temperature within the non-equilibrium Keldysh formalism. For the simplest XY interaction, analytical expressions in terms of the one particle solutions are obtained for linear and ring configurations. For small rings of even spin number, the group velocities of excitations depend on the parity of the total spin projection. This should enable a dynamical filtering of spin projections with a given parity i.e. a Spin projection chromatography.