⟨x_f, t_f|x_i, t_i⟩ = ∫ 𝒟x(t) e^{iS[x]/ℏ}. Equivalent to canonical quantisation; fundamental basis of QFT and lattice gauge theory.
⟨x_f, t_f|x_i, t_i⟩ = ∫ 𝒟x(t) e^{iS[x]/ℏ}. Equivalent to canonical quantisation; fundamental basis of QFT and lattice gauge theory.