Some paradoxes are discussed concerning the interpretation of the passage of particles and electromagnetic waves (pulses) across potential barriers and through nonuniform media, in particular, those with frequency dispersion and therefore dissipation. It is emphasized that a rigorous nonstationary approach does not entail any supraluminal velocities for the transfer of physical substances, although supraluminal velocities are indeed possible for several kinematically defined velocities, e.g., for the group velocity.

PACS: 03.65.Xp, 42.25.Bs (all) DOI: 10.3367/UFNe.0179.200904o.0443 URL: https://ufn.ru/en/articles/2009/4/m/ 000268782400013 2-s2.0-68249158296 2009PhyU...52..415D Citation: Davidovich M V "On the Hartman paradox, electromagnetic wave tunneling, and supraluminal velocities (comment on "Tunneling of electromagnetic waves: paradoxes and prospects" by A B Shvartsburg)" Phys. Usp. 52 415 (2009) BibTexBibNote ® (generic)BibNote ® (RIS)MedlineRefWorks Оригинал: Давидович М В «О парадоксе Хартмана, туннелировании электромагнитных волн и сверхсветовых скоростях (отклик на статью Шварцбурга А.Б. „Туннелирование электромагнитных волн — парадоксы и перспективы“)» УФН 179 443 (2009); DOI: 10.3367/UFNr.0179.200904o.0443