On reality of dynamical matrix
Other Condensed Matter
2017-08-22 v2
Abstract
The symmetry properties of the dynamical matrix are well described in multiple classic textbooks. This short paper revisits the issue to demonstrate alternative form of dynamical matrix which explicitly shows its symmetry and reality in common cases.
Keywords
Cite
@article{arxiv.1612.09148,
title = {On reality of dynamical matrix},
author = {Paweł T. Jochym and Jan Łażewski},
journal= {arXiv preprint arXiv:1612.09148},
year = {2017}
}
Comments
The second equality in eq. 11 does not hold for the general case. Thus, the conclusion does not follow from the premises and the claim of the paper is not proven