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math-ph2018
Perturbation theory for the spectral decomposition of Hermitian matrices
Marcus Carlsson
Let A and E be Hermitian self-adjoint matrices, where A is fixed and E a small perturbation. We study how the eigenvalues and eigenvectors of A+E depend on E, with the aim of obtai…
math-ph2012★ 3 cited
On the Dynamics of the Fermi-Bose Model
M. Ogren, M. Carlsson
We consider the exponential matrix representing the dynamics of the Fermi-Bose model in an undepleted bosonic field approximation. A recent application of this model is molecular d…