Comment on ``New ansatz for metric operator calculation in pseudo-Hermitian field theory''

Details Comment on ``New ansatz for metric operator calculation in pseudo-Hermitian field theory'' Comment on ``New ansatz for metric operator calculation in pseudo-Hermitian field theory''

2009-06-23

arxiv.org/abs/0906.4293v2

Phys.Rev.D80:128701,2009

Physics

High Energy Physics

High Energy Physics - Theory

2 pages, no figures. This comment replaces the previous comment on the Brief Report by Shalaby. In the previous comment we poi

Scientific paper

10.1103/PhysRevD.80.128701

In a recent Brief Report by Shalaby a new first-order perturbative
calculation of the metric operator for an $i\phi^3$ 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.

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