Localization of five-dimensional Elko Spinors on dS/AdS Thick Branes

Due to the special structure of a five-dimensional Elko spinor, its localization on a brane with codimension one becomes completely different from that of Dirac spinor. By introducing the coupling between the Elko spinor and the scalar field that can generate the brane, we have two kinds of localization mechanism for the five-dimensional Elko spinor zero mode on a brane. One is the Yukawa-type coupling, the other is the non-minimal coupling. In this paper, we investigate the localization of the Elko zero mode on de Sitter and Anti-de Sitter thick branes with two localization mechanisms, respectively. The results show that both two mechanisms can realize the localization. The forms of the scalar coupling function in two mechanisms have the similar properties, and they play similar role in localization.