Bound states of Schrödinger type operators with Heisenberg sub-Laplacian
Ari LaptevImperial College London, UK
Andrei VelicuImperial College London, UK
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Using the technique from  we find a new constant in a Cwikel–Lieb–Rozenblum type inequality that estimate the number of negative eigenvalues of a Schrödinger operator involving the Heisenberg sub-Laplacian with a potential that is proportional to the characteristic function of a measurable set.