A lifting theorem for planar mixed automorphic functions and applications

We deal with the concrete spectral analysis of an invariant magnetic Schrödinger operator acting on one dimensional $L^2$-mixed automorphic functions with respect to given equivariant pair $(ρ,τ)$ and given discrete subgroup of the semi-direct group $U(1)\ltimes\mathbb{C}$. This will be carried out by means of a lifting theorem to the classical automorphic functions associated with specific pseudo-character. We also provided a partial characterization of the equivariant pairs relative to our setting and discuss possible generalization to higher dimensions.

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