"expansion" nach Englisch mit Beispielen - Kollokationen-Wörterbuch Englisch
- Renormalization theory has sidestepped these divergence difficulties, which may be indicative of the failure of the perturbation expansion.
- Unphysical numbers are a sign of a divergent perturbation expansion.
- Momentum-space RG is usually performed on a perturbation expansion.
- The Hubbard model is in general intractable under usual perturbation expansion techniques.
- The natural orbitals of the perturbation expansion are a useful diagnostic for detecting intruder state effects.
- Borel summation finds application in perturbation expansions in quantum field theory.
- Unlike the usual perturbation expansion, it converges in some non-trivial regions, in particular when the interaction is small.
- These correct perturbed eigenstates in D are now the basis for the perturbation expansion:
- Krylov-Bogoliubov averaging can be used to approximate oscillatory problems when a classical perturbation expansion fails.
- However, perturbation expansions are generally not reliable for questions of long-term existence and stability, in the case of nonlinear equations.
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