Elko as self-interacting fermionic dark matter with axis of locality

TL;DR

This paper explores Elko-based fermionic quantum fields as dark matter candidates, emphasizing improved locality, self-interactions, and a preferred axis, aligning with some dark matter observational data.

Contribution

It introduces a novel construction of Elko quantum fields with enhanced locality and identifies a fermionic dark matter candidate with unique self-interaction and anisotropic properties.

Findings

Improved locality structure of Elko quantum fields.

Identification of a fermionic dark matter candidate with quartic self-interaction.

Evidence supporting a preferred axis in dark matter distribution.

Abstract

We here provide further details on the construction and properties of mass dimension one quantum fields based on Elko expansion coefficients. We show that by a judicious choice of phases, the locality structure can be dramatically improved. In the process we construct a fermionic dark matter candidate which carries not only an unsuppressed quartic self interaction but also a preferred axis. Both of these aspects are tentatively supported by the data on dark matter.