Self-interacting Elko dark matter with an axis of locality

Details Self-interacting Elko dark matter with an axis of locality Self-interacting Elko dark matter with an axis of locality

2009-11-16

arxiv.org/abs/0911.2947v1

Phys.Rev.D83:065017,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages (RevTex)

Scientific paper

10.1103/PhysRevD.83.065017

This communication is a natural and nontrivial continuation of the 2005 work of Ahluwalia and Grumiller on Elko. Here we report that Elko breaks Lorentz symmetry in a rather subtle and unexpected way by containing a `hidden' preferred direction. Along this preferred direction, a quantum field based on Elko enjoys locality. In the form reported here, Elko offers a mass dimension one fermionic dark matter with a quartic self-interaction and a preferred axis of locality. The locality result crucially depends on a judicious choice of phases.

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