Multi-channel Interference in Nonperturbative Multiphoton Pair Production by Gamma Rays Colliding
arXiv:1810.03606 · doi:10.1103/PhysRevResearch.2.013020
Abstract
The electron-positron pair production in the collision of two intense gamma lasers is studied beyond the dipole approximation. The complete electron/positron momentum spectrum obtained by three-dimensional computation shows directly the multi-photon pair production channels and provides a sensitive test on the widely-used concept of the effective mass. Nonperturbative features are identified in the dependence of the total yield on the field intensity. In particular, various breaks in the momentum rings are observed and proved to be a manifestation of particle's energy gaps in the standing light wave induced by the Kapitza-Dirac scattering. A theoretical model of multi-level systems coupled by the Kapitza-Dirac scattering and pair production channels is established. Multi-channel interference effects and pair production suppression are revealed in these systems.
arXiv comment8 pages, 6 figures. Two appendices are added for detailed description of the theoretical and numerical results. A new figure for energy spectrum is added
References in corpus (26)
- Extremely high-intensity laser interactions with fundamental quantum systems
- Electron-positron pairs in physics and astrophysics: from heavy nuclei to black holes
- Momentum signatures for Schwinger pair production in short laser pulses with a sub-cycle structure
- Highly-efficient source of collimated multi-MeV photons driven by radiation reaction of an electron beam in a self-generated magnetic field
- The Stokes Phenomenon and Schwinger Vacuum Pair Production in Time-Dependent Laser Pulses
- Schwinger mechanism revisited
- Pair production in laser fields oscillating in space and time
- Complete QED theory of multiphoton trident pair production in strong laser fields
- Interference Effects in Schwinger Vacuum Pair Production for Time-Dependent Laser Pulses
- Particle self-bunching in the Schwinger effect in spacetime-dependent electric fields
- Ramsey Fringes and Time-domain Multiple-Slit Interference from Vacuum
- Numerical Solution of the Time-Dependent Dirac Equation in Coordinate Space without Fermion-Doubling
- Effective mass signatures in multiphoton pair production
- Accelerating the Fourier split operator method via graphics processing units
- Electron-positron pair production in a bifrequent oscillating electric field
- Dynamically assisted Sauter-Schwinger effect in inhomogeneous electric fields
- Spin dynamics in the Kapitza-Dirac effect
- Spin polarized electron-positron pair production via elliptical polarized laser fields
- Dynamically assisted Schwinger effect beyond the spatially-uniform-field approximation
- Ponderomotive effects in multiphoton pair production
- Momentum distribution of particles created in space-time-dependent colliding laser pulses
- Electron-positron pair production in external electric fields varying both in space and time
- Kapitza-Dirac effect in the relativistic regime
- Optimizing Laser Pulses for Narrowband Inverse Compton Sources in the High-Intensity Regime
- Anomaly-induced dynamical refringence in strong-field QED
- Analytical solution for Klein-Gordon equation and action function of the solution for Dirac equation in counter-propagating laser waves
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- Out of equilibrium chiral higher order topological insulator on a -flux square lattice
- Seed and vacuum pair production in strong laser field