Comment on ``New ansatz for metric operator calculation in pseudo-Hermitian field theory''
High Energy Physics - Theory
2009-12-31 v2
Abstract
In a recent Brief Report by Shalaby a new first-order perturbative calculation of the metric operator for an scalar field theory is given. It is claimed that the result is an improvement on a previous calculation by Bender, Brody and Jones because it is local. Unfortunately Shalaby's calculation is not valid because of sign errors.
Keywords
Cite
@article{arxiv.0906.4293,
title = {Comment on ``New ansatz for metric operator calculation in pseudo-Hermitian field theory''},
author = {Carl M. Bender and Gregorio Benincasa and Hugh F. Jones},
journal= {arXiv preprint arXiv:0906.4293},
year = {2009}
}
Comments
2 pages, no figures. This comment replaces the previous comment on the Brief Report by Shalaby. In the previous comment we pointed out that Shalaby's calculation failed in all but 2 space-time dimensions. We have subsequently found additional errors which mean that the calculation is not valid even in that case