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

A Fledderjohann, K H Mütter, M Karbach +1

The 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…