{"knowledge_schema": {"broad_category": "Physics \u2192 Theoretical Physics \u2192 Quantum Field Theories", "refinement": "This problem examines the need for regularization in various physical theories, particularly at high energy scales.", "specific_scope": "The focus is on identifying which of the listed theories can be treated without the need for regularization when considering high-energy interactions.", "goal": "Determine which theory among the candidates does not require regularization at high energies."}, "summary": "The question asks which physical theory among the given options does not require regularization at high energies. Regularization is a technique used in quantum field theories to handle infinities that arise in calculations. Among the candidates, Classical Electrodynamics is the only theory that does not require regularization at high energies, as it is a classical theory and does not involve quantum effects that lead to divergences."}