High magnetic fields for fundamental physics

Battesti, Rémy; Melhem, Ziad; Daw, E. J.; Rizzo, C.; Pugnat, P.; Schott, M.; Kozlov, M. G.; Böser, S.; Semertzidis, Yannis K.; Inada, T.; Zavattini, G.; Irastorza, I.G.; Rikken, G. L. J. A.; Bruyant, Nicolas; Budker, Dmitry; Kim, Dong Lak; Flambaum, V. V.; Phipps, A.; Karbstein, Felix; Kate, Herman H.J. ten; Crooker, S. A.; Béard, J.

doi:10.1016/j.physrep.2018.07.005

Cited by 118 publications

(87 citation statements)

References 150 publications

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“…[5] for a pedagogical presentation of the conventional derivation of vacuum birefringence in constant background fields, and Ref. [82] for a concise review of experimental activities aiming at measuring vacuum birefringence in quasi-constant magnetic fields, actively pursued by various experiments [83][84][85].…”

Section: Head-on Collision Of Two Laser Pulsesmentioning

confidence: 99%

Probing Vacuum Polarization Effects with High-Intensity Lasers

Karbstein

2020

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These notes provide a pedagogical introduction to the theoretical study of vacuum polarization effects in strong electromagnetic fields as provided by state-of-the-art high-intensity lasers. Quantum vacuum fluctuations give rise to effective couplings between electromagnetic fields, thereby supplementing Maxwell's linear theory of classical electrodynamics with nonlinearities. Resorting to a simplified laser pulse model allowing for explicit analytical insights, we demonstrate how to efficiently analyze all-optical signatures of these effective interactions in high-intensity laser experiments. Moreover, we highlight several key features relevant for the accurate planning and quantitative theoretical analysis of quantum vacuum nonlinearities in the collision of high-intensity laser pulses.

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Section: Head-on Collision Of Two Laser Pulsesmentioning

confidence: 99%

Probing Vacuum Polarization Effects with High-Intensity Lasers

Karbstein

2020

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“…This process is governed by quantum electrodynamics (QED) and supplements Maxwell's classical equations in vacuum with effective nonlinear couplings of the electromagnetic fields [1][2][3][4]. For reviews emphasizing various theoretical aspects as well as prospects for the experimental detection of such effects, see [5][6][7][8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Boosting Quantum Vacuum Signatures by Coherent Harmonic Focusing

et al. 2019

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We show that coherent harmonic focusing provides an efficient mechanism to boost all-optical signatures of quantum vacuum nonlinearity in the collision of high-intensity laser fields. Assuming two laser pulses of given parameters at our disposal, we demonstrate a substantial increase of the number of signal photons measurable in experiments where one of the pulses undergoes coherent harmonic focusing before it collides with the fundamental-frequency pulse. Imposing a quantitative criterion to discern the signal photons from the background of the driving laser photons as well as accounting for the finite purity of polarization filtering, the discernible signal photons are found to arise from manifestly inelastic interaction processes of the driving laser fields. Our results suggest that coherent harmonic focusing offers a promising new route to the first detection of signatures of quantum vacuum nonlinearities at the high-intensity frontier in the laboratory.

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“…Vacuum birefringence [29][30][31][32] is already actively searched for in experiments using macroscopic magnetic fields to drive the effect and continuous wave laser for probing [33][34][35]; see Ref. [36] for a recent review. As the birefringence signal is inversely proportional to the wavelength of the probe and directly proportional to the number of photons available for probing, employing an x-ray probe seems a very promising alternative route to verify the effect in experiment.…”

Section: Introductionmentioning

confidence: 99%

X-ray photon scattering at a focused high-intensity laser pulse

Karbstein

Mosman

2019

Phys. Rev. D

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We study x-ray photon scattering in the head-on collision of an XFEL pulse and a focused highintensity laser pulse, described as paraxial Laguerre-Gaussian beam of arbitrary mode composition.For adequately chosen relative orientations of the polarization vectors of the colliding laser fields, this gives rise to a vacuum birefringence effect manifesting itself in polarization flipped signal photons. Throughout this article the XFEL is assumed to be mildly focused to a waist larger than that of the high-intensity laser beam. As previously demonstrated for the special case of a fundamental paraxial Gaussian beam, this scenario is generically accompanied by a scattering phenomenon of x-ray energy signal photons outside the forward cone of the XFEL beam, potentially assisting the detection of the effect in experiment. Here, we study the fate of the x-ray scattering signal under exemplary deformations of the transverse focus profile of the high-intensity pump. * Electronic address: felix.karbstein@uni-jena.de † Electronic address: mosmanea@tpu.ru

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High magnetic fields for fundamental physics

Cited by 118 publications

References 150 publications

Probing Vacuum Polarization Effects with High-Intensity Lasers

Probing Vacuum Polarization Effects with High-Intensity Lasers

Boosting Quantum Vacuum Signatures by Coherent Harmonic Focusing

X-ray photon scattering at a focused high-intensity laser pulse

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