Nonperturbative multiphoton electron-positron–pair creation in laser fields

Mocken, Guido R.; Ruf, Matthias; Müller, Carsten; Keitel, Christoph H.

doi:10.1103/physreva.81.022122

Cited by 96 publications

(136 citation statements)

References 81 publications

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“…There are numerical models based on the first principles like solving Dirac's equation and calculating the cross-sections of QED processes [32]. To simulate collective dynamics of the particles the numerical solution of the kinetic equations can be used [13].…”

Section: Introductionmentioning

confidence: 99%

Analytical model for electromagnetic cascades in rotating electric field

2011

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Electromagnetic cascades attract a lot of attention as an important QED effect that will reveal itself in various electromagnetic field configurations at ultrahigh intensities. We study cascade dynamics in rotating electric field analytically and numerically. The kinetic equations for the electronpositron plasma and gamma-quanta are formulated. The scaling laws are derived and analyzed. For the cascades arising far above the threshold the dependence of the cascade parameters on the field frequency is derived. The spectra of high-energy cascade particles are calculated. The analytical results are verified by numerical simulations.

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Section: Introductionmentioning

confidence: 99%

Analytical model for electromagnetic cascades in rotating electric field

2011

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“…By using the real-time Dirac-Heisenberg-Wigner (DHW) formalism [19][20][21], we first revisit the momenta spectra of created pairs in a linearly polarized field and exhibit the node structures in the momenta spectra [22]. The interference carpets is found, which appears also in the atomic above-threshold ionization problem [23].…”

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confidence: 99%

Nonperturbative signatures in pair production for general elliptic polarization fields

Li¹,

Lu²,

Xie³

et al. 2015

EPL

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Abstract. -The momentum signatures in nonperturbative multiphoton pair production for general elliptic polarization electric fields are investigated by employing the real-time Dirac-HeisenbergWigner formalism. For a linearly polarized electric field we find that the positions of the nodes in momenta spectra of created pairs depend only on the electric field frequency. The polarization of external fields could not only change the node structures or even make the nodes disappear but also change the thresholds of pair production. The momentum signatures associated to the node positions in which the even-number-photon pair creation process is forbid could be used to distinguish the orbital angular momentum of created pairs on the momenta spectra. These distinguishable momentum signatures could be relevant for providing the output information of created particles and also the input information of ultrashort laser pulses.Introduction. -Electron-positron (EP) pair creation in strong electric fields [1-3] is a fundamentally important exploration to probe the quantum vacuum. As a famous prediction of quantum electrodynamics, experimental observation of this nonperturbative tunneling pair production is still absent due to the fact that present available laser fields are far below the Schwinger critical electric field E cr = m 2 /e ∼ 1.32 × 10 16 V/cm, where m is the electron rest mass and −e is the electron charge (we use = c = 1). However, with the rapid development of laser technology, the stronger fields will be achieved in near future through some laser facilities [4][5][6]. This improves greatly the hopes to realize the observation of EP pair production from vacuum [7][8][9][10][11][12]. For long time two different pair production mechanisms are identified by the nonperturbative pair creation process (γ 1) and the perturbative multiphoton pair production process (γ 1), where γ = mω/eE 0 is the well known Keldysh adiabatic parameter [13], ω and E 0 are the frequency and strength

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“…The dynamic of the Dirac equation in the presence of a homogenous electric field was thoroughly studied in the literature [29][30][31][32][33] in the context of Schwinger pair creation. One might wonder how can these investigations shed light upon our problem.…”

Section: Introductionmentioning

confidence: 99%

“…One might wonder how can these investigations shed light upon our problem. Various techniques were used to tackle this subject -WKB approximation 30 , Bogolyubov transformation 31 , quantum Vlasov equation 33 , Dirac-Wigner phase space calculations 32 , etc. These nonperturbative attitudes are appropriate for this purpose but are not optimal for the calculation of QED processes relevant in the context of QED cascades.…”

Section: Introductionmentioning

confidence: 99%

The Lagrangian formulation of strong-field quantum electrodynamics in a plasma

2014

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The Lagrangian formulation of the scalar and spinor quantum electrodynamics (QED) in the presence of strong laser fields in a plasma medium is considered. We include the plasma influence in the free Lagrangian analogously to the "Furry picture" and obtain coupled equations of motion for the plasma particles and for the laser propagation. We demonstrate that the strong-field wave (i.e. the laser) satisfies a massive dispersion relation and obtain self-consistently the effective mass of the laser photons. The Lagrangian formulation derived in this paper is the basis for the cross sections calculation of quantum processes taking place in the presence of a plasma.

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Nonperturbative multiphoton electron-positron–pair creation in laser fields

Cited by 96 publications

References 81 publications

Analytical model for electromagnetic cascades in rotating electric field

Analytical model for electromagnetic cascades in rotating electric field

Nonperturbative signatures in pair production for general elliptic polarization fields

The Lagrangian formulation of strong-field quantum electrodynamics in a plasma

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