Significance of the non-2-spinon part of $S(q,ω)$ in the one-dimensional $S=1/2$ Heisenberg antiferromagnet at zero temperature

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/27609The impact of the non-2-spinon excitations of the one-dimensional $S=1/2$ Heisenberg antiferromagnet on the integrated intensity, the susceptibility, the frequency moments, and the Euclidian time representation of the $T=0$ dynamic spin structure factor $S(q,ω)$ is studied on the basis of finite-size data for chains with up to $N=28$ sites.9 pages, REVTEX, 4 figures, submitted to Physical Review BCondensed MatterSignificance of the non-2-spinon part of $S(q,ω)$ in the one-dimensional $S=1/2$ Heisenberg antiferromagnet at zero temperaturetext