# Elko under spatial rotations

@article{Ahluwalia2019ElkoUS, title={Elko under spatial rotations}, author={D. Ahluwalia and S. Sarmah}, journal={EPL}, year={2019}, volume={125}, pages={30005} }

Under a rotation by an angle $\vartheta$, both the right- and left- handed Weyl spinors pick up a phase factor ${\exp(\pm\, i \vartheta/2)}$. The upper sign holds for the positive helicity spinors, while the lower sign for the negative helicity spinors. For $\vartheta = 2\pi$ radians this produces the famous minus sign. However, the four-component spinors are built from a direct sum of the indicated two-component spinors. The effect of the rotation by $2\pi$ radians on the eigenspinors of the… Expand

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