Chapter 12, Problem 12.42E

Interpretation Introduction

Interpretation:

The given equation 12.29 is to be confirmed using equation 12.28 and equation 12.27.

Concept introduction:

Perturbation theory assumes that a system can be approximated as a known, solvable system. The difference between the known system and system of interest is small and additive. Thus, the Hamiltonian for the real system can be written as given below.

${\widehat{H}}_{\text{system}}={\widehat{H}}_{\text{ideal}}+{\widehat{H}}_{\text{perturb}}$