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In the context of Quantum Field Theory (QFT), "Path Integral Formulation" is:
a) A method where the probability amplitudes for a particle's path are summed over all possible paths, weighted by the exponential of the action, providing an alternative to operator-based approaches. b) A technique for solving differential equations of motion for classical fields. c) A method to calculate particle decay rates and cross-sections. d) A representation of particle interactions in terms of Feynman diagrams.
Sagot :
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