Localization of gauge fields in a tachyonic de Sitter thick braneworld Alfredo Herrera-Aguilar, Alma D. Rojas and Elí Santos Eur. Phys. J. C, 74 4 (2014) 2770 Published online: 09 April 2014 DOI: 10.1140/epjc/s10052-014-2770-1