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On Lagrangian and non-Lagrangian conformal-invariant nonlinear electrodynamics

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 نشر من قبل Steven Duplij
 تاريخ النشر 2019
  مجال البحث فيزياء
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 تأليف Steven Duplij




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A general approach is presented to describing nonlinear classical Maxwell electrodynamics with conformal symmetry. We introduce generalized nonlinear constitutive equations, expressed in terms of constitutive tensors dependent on conformal-invariant functionals of the field strengths. This allows a characterization of Lagrangian and non-Lagrangian theories. We obtain a general formula for possible Lagrangian densities in nonlinear conformal-invariant electrodynamics. This generalizes the standard Lagrangian of classical linear electrodynamics so as to preserve the conformal symmetry.



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