query: Can you write and solve the EM field Lagrangian density without reference to the EM potential?
positive_passages.docid: 48930
positive_passages.text: Least-action classical electrodynamics without potentials
negative_passages.docid: 102838
negative_passages.text: How do I integrate the Poisson equation to determine the electric potential along a particular direction (e.g., $z$)?
negative_passages.docid: 27480
negative_passages.text: Continuity equation for charge and current densities of an accelerated point charge
negative_passages.docid: 983
negative_passages.text: Use partial or covariant derivatives when deriving equations of a field theory?
negative_passages.docid: 138883
negative_passages.text: How to get the fourth component of EOM in a relativistic formulation of a charged particle in an electromagnetic field?
negative_passages.docid: 62692
negative_passages.text: Retrieving Maxwell's equations from the minimum action principle
negative_passages.docid: 155492
negative_passages.text: Exercise on local and global symmetry for a given Lagrangian density
negative_passages.docid: 140263
negative_passages.text: Has a metric formulation of electromagnetism ever been attempted?
negative_passages.docid: 155043
negative_passages.text: Substitution $\partial_\mu \to D_\mu \equiv \partial_\mu + ieA_\mu$ allows the introduction of electromagnetic interactions
negative_passages.docid: 94173
negative_passages.text: Deriving the Lagrangian for a free particle
negative_passages.docid: 28618
negative_passages.text: Deriving Heaviside-Feynman formula for the electric field of an arbitrarily moving charge from Lienard-Wiechert potential
negative_passages.docid: 153288
negative_passages.text: Deriving electric field
negative_passages.docid: 98358
negative_passages.text: A variational problem with a lagrangian , what is the lagrangian?
negative_passages.docid: 153727
negative_passages.text: Constant term in Lagrangian
negative_passages.docid: 99590
negative_passages.text: Can the Lorentz force expression be derived from Maxwell's equations?
negative_passages.docid: 116427
negative_passages.text: $(c^{\mu}\partial_{\mu}-m)\phi(x)=0$ not Lorentz-invariant?
negative_passages.docid: 35694
negative_passages.text: Can virtual particles be thought of as off-shell Fourier components of a field?