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

We consider the superposition of plane waves and localized wave packets. Thiskind of wave function can result from a local excitation of a particledescribed by a plane wave. For charged particles, the wave packet means acurrent, the time integral of which results in an extra charge, additionally tothe one carried by the plane wave. When the duration of the wave packet is tooshort for its details to be resolved experimentally, it is the extra chargethat can be determined and analyzed for information regarding the nature of theinteraction that created the wave packet. Assuming that the wave function isknown initially, we show an analytic method for the calculation of the extracharge by the aid of Fourier transform. Our approach is verified by comparingto both the well-known case of a Gaussian wave packet and numerically obtainedresults. As an important physical example, finally we consider the case oflocal excitation by laser pulses.

Charges carried by wave packets that are superimposed on plane waves