Vol 3 - Landau, Lifshitz - Quantum mechanics - non-relativistic theory (3ed., 1991) · Problem 39.1

Perturbation Theory

Physics — Landau & Lifshitz · secular-equation-doubly-degenerate-level

Problem

Determine the corrections to the eigenvalue in the first approximation and the correct functions in the zeroth approximation, for a doubly degenerate level.

Related theory

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