On applying the subspace perturbation theory to few-body Hamiltonians

Abstract

We present a selection of results on variation of the spectral subspace of a Hermitian operator under a Hermitian perturbation and show how these results may work for few-body Hamiltonians.

Based on a talk presented at the 22nd European Conference on Few-Body Problems in Physics (September 9-13, 2013, Cracow, Poland)

References in corpus (2)

• On the existence of solutions to the operator Riccati equation and the tanΘtheorem
• Metric properties of the set of orthogonal projections and their applications to operator perturbation theory

Cited by in corpus (1)

• Bounds on variation of the spectrum and spectral subspaces of a few-body Hamiltonian