principle of extremal action, Euler-Lagrange equations, de Donder-Weyl formalism?
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Let $X$ be a (spacetime) smooth manifold of dimension $n$ , $E \to X$ a field bundle and $L \in \Omega^{n,0}(j_\infty E)$ a Lagrangian.
For $j \in \Omega^{n-1,p}$ a conserved current and $\Sigma \subset X$ a submanifold of dimension $n-1$, the charge of $j$ relative to $\Sigma$ is the integral
gauge field: models and components
Last revised on June 15, 2022 at 03:28:01. See the history of this page for a list of all contributions to it.