Localization of 5D Elko Spinors on Minkowski Branes
arXiv:1107.2506 · doi:10.1103/PhysRevD.86.064012
Abstract
Recently, a new spin-1/2 fermionic quantum field with mass dimension one in four dimensions--Elko field was introduced as a candidate of dark matter. In this paper, we investigate the localization of 5D Elko {spinors} on Minkowski branes by presenting the equation of {the} Elko KK modes. For the 5D free massless Elko field, the zero mode can be localized on Randall-Sundrum thin brane but can not be localized on the majority of thick branes. There {do} not exist bound massive KK modes on all these branes. If the 5D mass term is introduced, there will exist bound Elko zero mode in Randall-Sundrum brane model. And when we introduce the Yukawa type coupling with the background scalar field, the Elko zero mode can be localized on some special thick branes with a particular coupling constant . Nevertheless, the massive KK modes still can not be localized on these branes. These results are very different from that of the conventional Dirac spinor {field} and the scalar field.
13 pages, 2 figures, published version
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- Comment on "Localization of 5D Elko Spinors on Minkowski Branes"
- New fermions in the bulk
- Non-standard Dirac equations for non-standard spinors
- Generalized Elko Theory
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- IR properties of one loop corrections to brane-to-brane propagators in models with localized vector bosons