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Which principle did Julian Schwinger use while developing a relativistically invariant perturbation theory?

  • The principle of uncertainty

  • The principle of least action

  • The principle of relativity

  • The principle of equivalence

Answer

The principle of relativity, as formulated by Albert Einstein, served as the guiding principle for Julian Schwinger's development of a relativistically invariant perturbation theory. This theory allowed for the calculation of corrections to the energy levels of quantum systems due to the interaction of particles, while adhering to the fundamental principles of special relativity.
The Schwinger Showdown: A Quiz on Julian Schwinger, the Legendary Physicist

The Schwinger Showdown: A Quiz on Julian Schwinger, the Legendary Physicist

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