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 Tools annual

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 monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

Effect of the carrier envelop phase on the electron-positron pair productionis studied in spatially inhomogeneous electric field with symmetrical frequencychirping. In high or low original frequency field without chirping as well asone with chirping, we find that the strength of interference effect of themomentum spectrum and the reduced particle number are all changeableperiodically with phase, in particular, these periodical changes are moresensitive to the applied parameters in case of low frequency field. At thesmall spatial scale, the reduced particle number change is over one ordermagnitude by phase in small chirping. For the reduced particle number, thedifferent optimal phases are obtained at different spatial scales, however, thelarger the chirping is applied, the higher the created pair number is got.Interestingly, some different types of symmetries, i.e., the mutual symmetry ofmirror/coincidence for two correlated phases and the individual self symmetryfor single phase, are unfolded on the momentum spectrum. The physical reason ofthe mutual symmetry between two correlated phases and also the individualsymmetry for two fixed specific phases are examined and discussed analyticallyin detail. The combined roles by phase and chirping on the periodic andsymmetrical behaviors of the momentum spectrum and the reduced particle numberare expected to have the potential extension to more fields such as that withmultidimensional spatial coordinate.

Phase effect and symmetry on pair production in spatially inhomogeneous frequency chirping electric fields