Erratum: Witnessing entanglement in quantum magnets using neutron scattering (Phys. Rev. B (2021) 103 (224434) DOI: 10.1103/PhysRevB.107.224434)

wo mistakes were made in our paper concerning the definition of the fluctuation-dissipation theorem. The expression given in Sec (Formula Presented). (Figure Presented) ecently, we became aware of the need for this correction through work reported in Ref. [3], and thank Varun Menon for originally raising the issue. We note that this incorrect factor of also affects the results of Refs. [4,5], the and QFI values of which will be corrected in the same fashion.