Why do we need perturbation theory

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Thread starter LSMOG
Start date Dec 13, 2016
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LSMOG

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Dec 13, 2016

Why do we need perturbation theory in quantum mechanics?

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Simon Bridge

Science Advisor

Homework Helper

Dec 13, 2016

Because solving the Schrödinger equation for the complete system in one go is too hard.

A. Neumaier

Science Advisor

Insights Author

Dec 13, 2016

Most quantum systems are not exactly solvable, and perturbation theory is one very important approach to solving them approximately.

Why do we need perturbation theory

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Why do we need perturbation theory

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