Comment on: Reply to comment on `Perfect imaging without negative refraction'

摘要

Whether or not perfect imaging is obtained in the mirrored version ofMaxwell's fisheye lens is debated in the comment/reply sequence[Blaikie-2010njp, Leonhardt-2010njp] discussing Leonhardt's original paper[Leonhardt-2009njp]. Here we show that causal solutions can be obtained withoutthe need for an "active localized drain", contrary to the claims in[Leonhardt-2010njp].