Probing vacuum birefringence by phase-contrast Fourier imaging under fields of high-intensity lasers

Details Probing vacuum birefringence by phase-contrast Fourier imaging under fields of high-intensity lasers Probing vacuum birefringence by phase-contrast Fourier imaging under fields of high-intensity lasers

2011-04-06

arxiv.org/abs/1104.0994v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, 9 figures. Accepted by Applied Physics B

Scientific paper

In vacuum high-intensity lasers can cause photon-photon interaction via the process of virtual vacuum polarization which may be measured by the phase velocity shift of photons across intense fields. In the optical frequency domain, the photon-photon interaction is polarization-mediated described by the Euler-Heisenberg effective action. This theory predicts the vacuum birefringence or polarization dependence of the phase velocity shift arising from nonlinear properties in quantum electrodynamics (QED). We suggest a method to measure the vacuum birefringence under intense optical laser fields based on the absolute phase velocity shift by phase-contrast Fourier imaging. The method may serve for observing effects even beyond the QED vacuum polarization.

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