title: Comment on "Correct definition of the Poynting vector in electrically and magnetically polarizable medium reveals that negative refraction is impossible.".
abstract: Physically valid electromagnetic continuity equations can be generated from either the usual form of the Poynting vector E x H or the alternative E x B form. However, the continuity equations are not identical, which means that quantities following from E x H cannot always be compared directly to those from E x B. In particular, the work done on the bound current densities are attributed differently in the two representations.We also comment on the negative refraction condition used.
authors.affiliation: Blackett Laboratory, Imperial College London, Prince Consort Road, London SW7 2AZ, United Kingdom.
authors.forename: Alberto
authors.initials: A
authors.lastname: Favaro
authors.forename: Paul
authors.initials: P
authors.lastname: Kinsler
authors.forename: Martin W
authors.initials: MW
authors.lastname: McCall