Nonlinear Breit-Wheeler process in short laser double pulses

Титов, А. И.; Takabe, H.; Kämpfer, B.

doi:10.1103/physrevd.98.036022

Cited by 41 publications

(22 citation statements)

References 31 publications

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“…The relative difference between minimum and maximum amounts to about 25%. A very similar behaviour of the total probability was observed for pair production by the nonlinear Breit- Wheeler process in two consecutive laser pulses with variable time delay [39] (see also [40] for a related study). For comparison, we note that the total probability in a single pulse comprising 13 cycles amounts to 3.9 × 10 −4 m 3 (2.6 × 10 −5 m 3 ) for ω = 0.49072m (ω = 0.34888m).…”

Section: Symmetric Double Pulsessupporting

confidence: 66%

Electron-positron pair production in oscillating electric fields with double-pulse structure

et al. 2019

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Electron-positron pair production from vacuum in a strong electric field oscillating in time is studied. The field is assumed to consist of two consecutive pulses, with variable time delay in between. Pair production probabilities are obtained by numerical solution of the corresponding time-dependent Dirac equation. Considering symmetric field configurations comprising two identical pulses, we show that the pulse distance strongly affects the momentum spectra of produced particles and even the total production probability. Conversely, in a highly asymmetric situation when the field contains low-intensity prepulse and high-intensity main pulse, we identify a range of field parameters where the prepulse despite its weakness can leave visible traces in the particle spectra.

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Section: Symmetric Double Pulsessupporting

confidence: 66%

Electron-positron pair production in oscillating electric fields with double-pulse structure

et al. 2019

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“…39). Then ρ (1) (green line). We pick two moments of time t = π/2 and t = 2 on which it could be more clearly to match the shapes of n(k; t) with the shapes of n(k; t = 0) for the pre-and postquench states.…”

Section: Quench Dynamics From Attractive To Repulsive Interactionsmentioning

confidence: 99%

“…The physics of ultracold atoms has become one of the most promising fields of research. It has gained much attention in variety of ways such as in a simulation of the Breit-Wheeler pair production for QED study [1], a search of improved methods of sympathetic cooling [2], a study of precision spectroscopy [3], a study of a transport of a Bose-Einstein condensate (BEC) [4], a study of Efimov physics [5], a study of Josephson junctions [6] and many more. A quantum computer [7] is one of the prominent examples of the application that this research can provide.…”

Section: Introductionmentioning

confidence: 99%

Tunneling of two bosonic atoms from a one-dimensional anharmonic trap

Ishmukhamedov

Melezhik

2017

Phys. Rev. A

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We investigate the quantum dynamics of two interacting bosonic atoms confined in a one-dimensional anharmonic trap. The tunneling rate, an experimentally measurable parameter of the system, was calculated as a function of the effective coupling interatomic constant $g$ from the ground (n=N=0) and first excited atomic states in the trap with respect to relative (n=2,N=0) and center-of-mass (n=0,N=2) atomic motion. This allows to investigate the initial population and pair correlation, as well as the effective coupling constant $g$, of the system by comparing the calculated tunneling rate with the experimental one. We have observed that the only possible tunneling scenario is a sequential particle tunneling in the cases we considered. We have also analyzed a rearrangement $(0,2)\rightleftarrows(2,0)$ of the spectrum in the limit $g\rightarrow \pm 0$ of noninteracting atoms

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“…A number of interesting and important effect of finite pulses related to the non-linear Compton (C) and BW processes are analyzed in Refs. [11][12][13][14][15][17][18][19][20][21][22][23][24][25] and [26][27][28][29][30][31][32][33][34][35] , respectively. The temporal pulse structure is expected to be important for short and ultrashort pulses.…”

Section: Introductionmentioning

confidence: 99%

Multi-photon regime of non-linear Breit-Wheeler and Compton processes in short linearly and circularly polarized laser pulses

Титов¹,

Otto

Kämpfer

2020

Eur. Phys. J. D

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Non-linear Breit-Wheeler e + e − pair production and its crossing channel -the non-linear Compton process -in the multi-photon regime are analyzed for linearly and circularly polarized short laser pulses. We show that (i) the azimuthal angular distributions of outgoing electrons in these processes differ on a qualitative level, and (ii) they depend on the polarization properties of the pulses. A finite carrier envelope phase φCEP leads to a non-trivial non-monotonic behavior of the azimuthal angle distributions of the considered processes. That effect can be used for the φCEP determination.

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Nonlinear Breit-Wheeler process in short laser double pulses

Cited by 41 publications

References 31 publications

Electron-positron pair production in oscillating electric fields with double-pulse structure

Electron-positron pair production in oscillating electric fields with double-pulse structure

Tunneling of two bosonic atoms from a one-dimensional anharmonic trap

Multi-photon regime of non-linear Breit-Wheeler and Compton processes in short linearly and circularly polarized laser pulses

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