Elko as an inflaton candidate

Abstract Elko is a spin-half fermion with a two-fold Wigner degeneracy and Klein–Gordon dynamics. In this paper, we show that in a spatially flat FLRW space-time, slow-roll inflation can be initiated by the homogeneous Elko fields. The inflaton is a composite scalar field obtained by contracting the...

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Bibliographic Details
Main Authors: Xinglong Chen, Cheng-Yang Lee, Yanjiao Ma, Haomin Rao, Wenqi Yu, Siyi Zhou
Format: Article
Language:English
Published: SpringerOpen 2025-06-01
Series:European Physical Journal C: Particles and Fields
Online Access:https://doi.org/10.1140/epjc/s10052-025-14361-0
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