Comment on arXiv:1105.6233 entitled "Neutron-Inelastic-Scattering Peak by Dissipationless Mechanism in the s++-wave State in Iron-based Superconductors" by S. Onari and H. Kontani

TL;DR

This comment defends a previous study on neutron scattering in iron-based superconductors, clarifying that their numerical calculations and conclusions remain valid despite recent criticisms.

Contribution

It refutes recent criticisms by Onari and Kontani, reaffirming the accuracy of the original numerical calculations and conclusions regarding neutron scattering in iron pnictides.

Findings

Original study's conclusions are correct and not invalidated by recent criticisms.

Numerical calculations in the original paper are accurate.

The critique by Onari and Kontani is unfounded.

Abstract

Recently, Onari and Kontani submitted a paper [arXiv:1105.6233] which criticizes our recent theoretical study [arXiv:1103.0586] on the neutron scattering experiment as a probe for determining the superconducting gap in the iron pnictides. In their paper, Onari and Kontani have developed a formalism in which the imaginary part of the dynamical spin susceptibility (Im$\chi_s(\Vec{q},\omega)$) in the superconducting state can be more accurately calculated especially in the $\omega<2\Delta$ regime, where $\Delta$ is the superconducting gap. In section IIIC of their paper, they mention that the conclusions of our paper are "incorrect based on inaccurate numerical calculation". In the present Comment, we show that this in fact is not correct.