Wheeler–Feynman absorber theory

Interpretation of electrodynamics

The Wheeler–Feynman absorber theory (also called the Wheeler–Feynman time-symmetric theory), named after its originators, the physicists Richard Feynman and John Archibald Wheeler, is a theory of electrodynamics based on a relativistically correct extension of action at a distance electron particles. The theory postulates no independent electromagnetic field. Rather, the whole theory is encapsulated by the Lorentz-invariant action S {\displaystyle S} of particle trajectories z a μ ( τ a) , z b μ ( τ b) ⋯ {\displaystyle z_{a}^{\mu }(\tau _{a}),\,\,z_{b}^{\mu }(\tau _{b})\cdots } defined as S = − ∑ a < b ( m a ∫ [ γ a ] d z μ , a d z a μ + q a q b ∫ [ γ a × γ b ] d z ν , a d z b ν δ ( ( z a − z b) μ ( z a − z b) μ)) , {\displaystyle S=-\sum _{a<b}{\Bigg (}m_{a}\int \limits _{[\gamma _{a}]}{\sqrt {\mathrm {d} z_{\mu ,a}\mathrm {d} z_{a}^{\mu }}}+q_{a}q_{b}\int \limits _{[\gamma _{a}\times \gamma _{b}]}\mathrm {d} z_{\nu ,a}\mathrm {d} z_{b}^{\nu }\ \delta ((z_{a}-z_{b})_{\mu }(z_{a}-z_{b})^{\mu }){\Bigg)},} where c = 1.

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