Fig. 6.

Effects of two-magnon decays in $\mathcal{I}\left(\mathbf{k},\omega \right)$ for extended model. Results are shown for Model 2 computed via a LSWT, b self-consistent iDE approach, and c ED. Results in a and b are averaged over the different zigzag domains. The white and pink dashed lines indicate the bottom of the two-magnon continuum, $E_2^{\min }\left(\mathbf{k}\right)$ for the different zigzag domains. In the iDE results, the effects of two-magnon decays strongly broadens any magnon bands overlapping with the two-magnon continuum