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math.FA2014★ 1 cited
Poisson wave trace formula for perturbed Dirac operators
J. Kungsman, M. Melgaard
We consider self-adjoint Dirac operators $\ham{D}=\ham{D}_0 + V(x)$, where $\ham{D}_0$ is the free three-dimensional Dirac operator and is a smooth compactly supported Hermi…
math.FA2011★ 18 cited
Stiefel and Grassmann manifolds in Quantum Chemistry
Eduardo Chiumiento, Michael Melgaard
We establish geometric properties of Stiefel and Grassmann manifolds which arise in relation to Slater type variational spaces in many-particle Hartree-Fock theory and beyond. In p…