M. Engelmann

most citedSpectral deformation for two-body dispersive systems with e.g. the Yukawa potential

1 citations · 2 across the 2 of their papers we have counts for

collaborators

2 papers

math-ph2015★ 1 cited

Spectral deformation for two-body dispersive systems with e.g. the Yukawa potential

Matthias Engelmann, Morten Grud Rasmussen

We find an explicit closed formula for the $k$ 'th iterated commutator $ad_{A}^{k} (H_{V} (ξ))$ of arbitrary order $k \geq 1$ between a Hamiltonian $H_{V} (ξ) = M_{ω_{ξ}} + S_{V ˇ}$ and a…

math-ph2015★ 1 cited

Local Spectral Deformation

M. Engelmann, J. S. Møller, M. G. Rasmussen

We develop an analytic perturbation theory for eigenvalues with finite multiplicities, embedded into the essential spectrum of a self-adjoint operator $H$ . We assume the existence…