Phase effect and symmetry on pair production in spatially inhomogeneous
frequency chirping electric fields
- URL: http://arxiv.org/abs/2206.10342v1
- Date: Tue, 21 Jun 2022 12:58:19 GMT
- Title: Phase effect and symmetry on pair production in spatially inhomogeneous
frequency chirping electric fields
- Authors: Melike Mohamedsedik, Lie-Juan Li, Li Wang, Orkash Amat, Li-Na Hu and
B. S. Xie
- Abstract summary: Effect of carrier envelop phase on the electron-positron pair production is studied in spatially inhomogeneous electric field with symmetrical frequency chirping.
In high or low original frequency field without chirping as well as one with chirping, we find that the strength of interference effect of the momentum spectrum and the reduced particle number are all changeable periodically with phase.
- Score: 4.879039615224724
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Effect of the carrier envelop phase on the electron-positron pair production
is studied in spatially inhomogeneous electric field with symmetrical frequency
chirping. In high or low original frequency field without chirping as well as
one with chirping, we find that the strength of interference effect of the
momentum spectrum and the reduced particle number are all changeable
periodically with phase, in particular, these periodical changes are more
sensitive to the applied parameters in case of low frequency field. At the
small spatial scale, the reduced particle number change is over one order
magnitude by phase in small chirping. For the reduced particle number, the
different optimal phases are obtained at different spatial scales, however, the
larger the chirping is applied, the higher the created pair number is got.
Interestingly, some different types of symmetries, i.e., the mutual symmetry of
mirror/coincidence for two correlated phases and the individual self symmetry
for single phase, are unfolded on the momentum spectrum. The physical reason of
the mutual symmetry between two correlated phases and also the individual
symmetry for two fixed specific phases are examined and discussed analytically
in detail. The combined roles by phase and chirping on the periodic and
symmetrical behaviors of the momentum spectrum and the reduced particle number
are expected to have the potential extension to more fields such as that with
multidimensional spatial coordinate.
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