Nonlinear superposition and self-interaction in classical field theory
115139
Use my example to explain why loop diagram will not occur in classical equation of motion?
17785
Variational Derivation of Schrodinger Equation
141907
Haag's theorem and practical QFT computations
152177
Griffiths on Averaging and the Macroscopic Electric Field
130259
Is the S-Matrix the only quantum field observable?
65831
Understanding type of force interaction in particle decays
87914
Contradictory result for scalar-field propagator from Feynman rules and LSZ formula
115490
Is particle superposition reflected in the particle's gravitational footprint?
121584
Rigor in quantum field theory
55700
Is it possible to recover Classical Mechanics from Schrödinger's equation?
151855
Non-linearity and self-coupling of gravity
983
Use partial or covariant derivatives when deriving equations of a field theory?
89528
Formalizing Quantum Field Theory
155043
Substitution $\partial_\mu \to D_\mu \equiv \partial_\mu + ieA_\mu$ allows the introduction of electromagnetic interactions
29952
Time-ordering vs normal-ordering and the two-point function/propagator
137602
Do strong and weak interactions have classical force fields as their limits?
152405
Decoupling of Holomorphic and Anti-holomorphic parts in 2D CFT