Exact Dynamical Structure Factor of the Degenerate Haldane-Shastry Model
Exact Dynamical Structure Factor of the Degenerate Haldane-Shastry Model
The dynamical structure factor $S(q,\ensuremath{\omega})$ of the $K$-component ( $K\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}2$, $3$, $4$) spin chain with a $1/{r}^{2}$ interaction is derived exactly at zero temperature for the arbitrary size of the system. The result is interpreted in terms of a free quasiparticle picture which is a generalization of the spinon picture …