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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The behavior of massive quantum fields in the general plane wave spacetimeand external, non-plane, electromagnetic waves is studied. The asymptoticconditions, the "in" ("out") states and the cross sections are analysed. It isobserved that, despite of the singularities encountered, the global form ofthese states can be obtained: at the singular points the Dirac delta-likebehavior emerges and there is a discrete change of phase of the wave functionafter passing through each singular point. The relations between these phasecorrections and local charts are discussed. Some examples of waves of infiniterange (including the circularly polarized ones) are presented for which theexplicit form of solutions can be obtained. All these results concern both thescalar as well as spin one-half fields; in the latter case the change of thespin polarization after the general sandwich wave has passed is studied.

Global propagation of massive quantum fields in the plane gravitational waves and electromagnetic backgrounds