Effects of electric field polarizations on pair production
arXiv:1508.03440 · doi:10.1103/PhysRevD.92.085001
Abstract
The effects of electric field polarizations on pair production from a vacuum are investigated numerically by employing the real-time Dirac-Heisenberg-Wigner formalism. For few-cycle fields, it is found that the interference pattern in momentum spectra is absent and the circular distortion of momentum distribution becomes more apparent with the increase of polarization. For multi-cycle fields, it is found that the interference effects in momentum spectra are obvious. And as the polarization increases, the momentum distribution is split into two parts in the momentum direction first and then two separated parts are connected into a ring. The effects of polarizations on the number density of created particles exhibits two different characteristics. For a small laser frequency, the particle number density deceases with the polarization, while for a large laser frequency, the relation between them is sensitive to the field frequency nonlinearly. Some interpretations for the obtained results in this study, which is expected to be valuable to deepen the understanding of pair production in complex fields and also helpful for the study associated to strong-field ionization.
14 pages, 6 figures, submitted to Phys Rev D. arXiv admin note: text overlap with arXiv:1410.6284
References in corpus (7)
- Dynamically assisted Schwinger mechanism
- Momentum signatures for Schwinger pair production in short laser pulses with a sub-cycle structure
- Schwinger pair production in space- and time-dependent electric fields: Relating the Wigner formalism to quantum kinetic theory
- Pair production in laser fields oscillating in space and time
- Interference Effects in Schwinger Vacuum Pair Production for Time-Dependent Laser Pulses
- Pair Production in Rotating Electric Fields
- Semiclassical pair production rate for rotating electric fields
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- Pulse shape optimization for electron-positron production in rotating fields
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- Study of pair production in inhomogeneous two-color electric fields using the computational quantum field theory
- Electron-positron pair production in an oscillating Sauter potential
- Threshold effects in electron-positron pair creation from the vacuum: Stabilization and longitudinal vs transverse momentum sharing
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