Photon-photon scattering at the high-intensity frontier

Gies, Holger; Karbstein, Felix; Kohlfürst, Christian; Seegert, Nico

doi:10.1103/physrevd.97.076002

Cited by 60 publications

(36 citation statements)

References 110 publications

(115 reference statements)

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“…In order to use the high-energy approximation Eq. ( 27) for the QED calculation with the paraxial Gaussian beam, we employ the infinite Rayleigh-length approximation [124,125] (no such approximation is required in the simulation), which sends ς → 0, meaning that a ⊥ can be written as a ⊥ = exp[−(x ⊥ ) 2 /w 2 0 ]a ⊥ pw where a ⊥ pw is the plane-wave potential. We pick the same pulse envelope as in previous sections, i.e.…”

Section: Focused Lasersmentioning

confidence: 99%

Higher fidelity simulations of nonlinear Breit–Wheeler pair creation in intense laser pulses

Blackburn

King

2022

Eur. Phys. J. C

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When a photon collides with a laser pulse, an electron-positron pair can be produced via the nonlinear Breit–Wheeler process. A simulation framework has been developed to calculate this process, which is based on a ponderomotive approach that includes strong-field quantum electrodynamical effects via the locally monochromatic approximation (LMA). Here we compare simulation predictions for a variety of observables, in different physical regimes, with numerical evaluation of exact analytical results from theory. For the case of a focussed laser background, we also compare simulation with a high-energy theory approximation. These comparisons are used to quantify the accuracy of the simulation approach in calculating harmonic structure, which appears in the lightfront momentum and angular spectra of outgoing particles, and the transition from multi-photon to all-order pair creation. Calculation of the total yield of pairs over a range of intensity parameters is also used to assess the accuracy of the locally constant field approximation (LCFA).

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Section: Focused Lasersmentioning

confidence: 99%

Higher fidelity simulations of nonlinear Breit–Wheeler pair creation in intense laser pulses

Blackburn

King

2022

Eur. Phys. J. C

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“…In addition, the presence of magnetic fields produce an enhancement at the light shinning through wall experiments designed in [28,29], which may be seen in a near future. Further applications of these non linearities for laser fields were considered in [40]. In addition, the interaction between micro-bubbles with ultra intense laser pulses, by taking into account the QED vacuum polarization, was studied in [56].…”

Section: Further Comments About the Approximations Madementioning

confidence: 99%

Electric and magnetic axion quark nuggets, their stability and their detection

Santillán

Sempe

2020

Eur. Phys. J. C

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The present work studies the dynamics of axion quark nuggets introduced in Zhitnitsky (JCAP 0310:010, 2003) and developed further in the works (Zhitnitsky in Phys Rev D 74:043515, 2006; Lawson and Zhitnitsky in Phys Lett B 724, 17, 2013; Lawson and Zhitnitsky in Phys Rev D 95:063521, 2017; Liang and Zhitnitsky in Phys Rev D 94:083502, 2016; Ge et al. in Phys Rev D 97:043008, 2018; Zhitnitsky in Phys Dark Univ 22:1, 2018; Lawson and Zhitnitsky in Phys Dark Univ 100295, 2019; Raza et al. in Phys Rev D 98:103527, 2018; Fischer et al. in Phys Rev D 98:043013, 2018; van Waerbeke and Zhitnitsky in Phys Rev D 99:043535, 2019; Flambaum and Zhitnitsky in Phys Rev D 99:043535, 2019; Lawson and Zhitnitsky in JCAP 02:049, 2017; Ge et al. in Phys Rev D 99:116017, 2019). The new feature considered here is the possibility that these nuggets become ferromagnetic. This possibility was pointed out in Tatsumi (Phys Lett B 489:280 2000) for ordinary quark nuggets, although ferromagnetism may also take place due some anomaly terms found in Son and Zhitnitsky (Phys Rev D 70:074018, 2004), Son and Stephanov (Phys Rev D 77:014021, 2008) and Melitski and Zhitnitsky (Phys Rev D 72:045011, 2005). The purpose of the present letter however, is not to give evidence in favor or against these statements. Instead, it is focused in some direct consequences of this ferromagnetic behavior, if it exists. The first is that the nugget magnetic field induces an electric field due to the axion wall, which may induce pair production by Schwinger effect. Depending on the value of the magnetic field, the pair production can be quite large. A critical value for such magnetic field at the surface of the nugget is obtained, and it is argued that the value of the magnetic field of Tatsumi (2000) is at the verge of stability and may induce large pair production. The consequences of this enhanced pair production may be unclear. It may indicate that the the nugget evaporates, but on the other hand it may be just an indication that the intrinsic magnetic field disappears and the nuggets evolves to a non magnetized state such as in Zhitnitsky (2003), Oaknin and Zhitnitsky (Phys. Rev. D 71:023519, 2005), Zhitnitsky (2006), Lawson and Zhitnitsky (2013), Lawson and Zhitnitsky (2017), Liang and Zhitnitsky (2016), Ge et al. (2018), Zhitnitsky (2018), Lawson and Zhitnitsky (2019), Raza et al. (2018), Fischer et al. (2018), van Waerbeke and Zhitnitsky (2019), Flambaum and Zhitnitsky (2019), Lawson and Zhitnitsky (2017), and Ge et al. (2019). The interaction of such magnetic and electric nugget with the troposphere of the earth is also analyzed. It is suggested that the cross section with the troposphere is enhanced in comparison with a non magnetic nugget but still, it does not violate the dark matter collision bounds. Consequently, these nuggets may be detected by impacts on water or by holes in the mountain craters (Pace VanDevender et al. in Sci Rep 7:8758, 2017). However, if the magnetic field does not decay before the actual universe, then this would lead to high energy electron flux due to its interaction with the electron gases of the Milky Way. This suggests that these magnetized quarks may be a considerably part of dark matter, but only if their hypothetical magnetic and electric fields are evaporated.

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“…A solution for this challenge is to combine the highest achievable electric field from laser pulses with ultra-relativistic electron beams or γ-photons, allowing the Schwinger field to be achieved in the rest frame of the electrons. In addition to pair generation, the vacuum responds nonlinearly and processes such as light-light scattering [10] and vacuum birefringence [11] can occur and be detected [12]. A review of strong-field QED processes is found in reference [3].…”

Section: Introductionmentioning

confidence: 99%

Single particle detection system for strong-field QED experiments

Salgado¹,

Cavanagh²,

Tamburini³

et al. 2021

New J. Phys.

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Measuring signatures of strong-field quantum electrodynamics (SF-QED) processes in an intense laser field is an experimental challenge: it requires detectors to be highly sensitive to single electrons and positrons in the presence of the typically very strong x-ray and γ-photon background levels. In this paper, we describe a particle detector capable of diagnosing single leptons from SF-QED interactions and discuss the background level simulations for the upcoming Experiment-320 at FACET-II (SLAC National Accelerator Laboratory). The single particle detection system described here combines pixelated scintillation LYSO screens and a Cherenkov calorimeter. We detail the performance of the system using simulations and a calibration of the Cherenkov detector at the ELBE accelerator. Single 3 GeV leptons are expected to produce approximately 537 detectable photons in a single calorimeter channel. This signal is compared to Monte-Carlo simulations of the experiment. A signal-to-noise ratio of 18 in a single Cherenkov calorimeter detector is expected and a spectral resolution of 2% is achieved using the pixelated LYSO screens.

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Photon-photon scattering at the high-intensity frontier

Cited by 60 publications

References 110 publications

Higher fidelity simulations of nonlinear Breit–Wheeler pair creation in intense laser pulses

Higher fidelity simulations of nonlinear Breit–Wheeler pair creation in intense laser pulses

Electric and magnetic axion quark nuggets, their stability and their detection

Single particle detection system for strong-field QED experiments

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