How can I determine the equations and other conserved quantity of a field theory with Mathematica?
I would like solve the following Lagrangian density:
\[ScriptCapitalL]=-(1/4)Subscript[F,\[Mu]\[Nu]]F^\[Mu]\[Nu]+(Subscript[D,\[Mu]]\[Phi])SuperStar[(D^\[Mu]\[Phi])]-U(\[LeftBracketingBar]\[Phi]\[RightBracketingBar]).
