$\mathcal{N}=2$ Double graded supersymmetric quantum mechanics via dimensional reduction

Abstract

We present a novel $\mathcal{N}=2$ ${\mathbb{Z}}_2^2$-graded supersymmetric quantum mechanics (${\mathbb{Z}}_2^2$-SQM) which has different features from those introduced so far. It is a two-dimensional (two-particle) system and is the first example of the quantum mechanical realization of an eight-dimensional irrep of the $\mathcal{N}=2$ ${\mathbb{Z}}_2^2$-supersymmetry algebra. The ${\mathbb{Z}}_2^2$-SQM is obtained by quantizing the one-dimensional classical system derived by dimensional reduction from the two-dimensional ${\mathbb{Z}}_2^2$-supersymmetric Lagrangian of $\mathcal{N}=1$, which we constructed in our previous work. The ground states of the ${\mathbb{Z}}_2^2$-SQM are also investigated.

arXiv comment16 pages, no figure

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