English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

In this work, we explicitly evaluate the gauge propagator of the Maxwelltheory supplemented by the CPT-even term of the SME. First, we specialize ourevaluation for the parity-odd sector of the tensor $W_{\mu \nu \rho \sigma}$,\using a parametrization that retains only the three nonbirefringentcoefficients. From the poles of the propagator, it is shown that physical modesof this electrodynamics are stable, non-causal and unitary. In the sequel, wecarry out the parity-even gauge propagator using a parametrization that allowsto work with only the isotropic nonbirefringent element. In this case, we showthat the physical modes of the parity-even sector of the tensor $W$ are causal,stable and unitary for a limited range of the isotropic coefficient.

Gauge propagator and physical consistency of the CPT-even part of the Standard Model Extension