Sat, 19 Jul 2008 04:38:19 BST CiteULike: norris's library [808 articles] http://www.citeulike.org/user/norris/article/2363192 CiteULike.org en-gb Copyright © 2004-2008 citeulike.org http://www.citeulike.org/user/norris/article/2363192 <i>(21 Jan 2008)</i><br /><br />In a recent Letter, Cummer et al. give a description of material parameters for acoustic wave propagation giving rise to a 3D spherical cloak, and verify the cloaking phenomenon on the level of scattering coefficients. A similar configuration has been given by Chen and Chan. In this Comment, we show that these theoretical constructions follow directly from our earlier work <a href="http://arxiv.org/abs/math/0611185">this http URL</a> on full wave analysis of cloaking for the Helmholtz equation with respect to Riemannian metrics. Furthermore, the analysis there covers the case of acoustically radiating objects being enclosed in the cloaked region. Comment on "Scattering Theory Derivation of a 3D Acoustic Cloaking Shell" Allan Greenleaf Yaroslav Kurylev Matti Lassas Gunther Uhlmann (21 Jan 2008) 2008-02-11T16:04:03-00:00 2008 cloaking metamaterial