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What is the Perturbation Theory in Quantum Physics?


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Solution

Perturbation Theory:

  1. In quantum mechanics, perturbation theory is a set of approximation schemes.
  2. It describes a complicated quantum system in terms of a simpler one that is directly related to mathematical perturbation.
  3. Since the early applications of quantum mechanics, perturbation theory has been useful.
  4. The main advantage of this approach is that it provides analytical approximate solutions to many nontrivial simple problems, allowing for further discussion and interpretation of physical phenomena.

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