2 papers
hep-th2026
Casimir effect in Plebański nonlinear electrodynamics with spontaneously Lorentz-breaking magnetic vacua
C. A. Escobar, Román Linares, Román Linares +2
We study the Casimir effect in a class of gauge-invariant nonlinear electrodynamics models designed to admit spontaneously Lorentz-breaking magnetic vacua. The theory is formulated…
hep-th2026
Constitutive Origin of Hamiltonian Degeneracy in Nonlinear Electrodynamics with Spontaneous Lorentz Symmetry Breaking
C. A. Escobar, Román Linares
In PlebaÅski nonlinear electrodynamics with spontaneous Lorentz symmetry breaking, nontrivial magnetic backgrounds are selected by stationary points of an effective Hamiltonian. P…