Final answer:
Quantum Field Theory (QFT) utilizes an electromagnetic tensor to explain electromagnetic interactions in particle physics.
Step-by-step explanation:
Quantum Field Theory (QFT) uses an electromagnetic tensor to describe the electromagnetic interactions between particles on the submicroscopic scale. The electromagnetic tensor is a mathematical object that combines the electric and magnetic fields into a single entity. It provides a powerful framework for understanding and calculating the behavior of electromagnetic fields and their effects in quantum systems.