Theoretical princi les of constructing the equations of motion for a spin color-charged particle in gauge and fermion fields

Equations of motion from field equations

Equations of motion from field equations and a gauge-invariant variational principle for the motion of charged particles

✍ Dariusz Chruściński; Jerzy Kijowski 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 790 KB

New, gauge-independent, second-order Lagrangian for the motion of classical, charged test particles is proposed. It differs from the standard, gauge-dependent, first-order Lagrangian by boundary terms only. A new method of deriving equations of motion from field equations is developed. When applied