Vacuum refractive indices and helicity flip in strong-field QED
Journal article, 2014

Vacuum birefringence is governed by the amplitude for a photon to flip helicity or polarization state in an external field. Here, we calculate the flip and nonflip amplitudes in arbitrary plane wave backgrounds, along with the induced spacetime-dependent refractive indices of the vacuum. We compare the behavior of the amplitudes in the low energy and high energy regimes, and analyze the impact of pulse shape and energy. We also provide the first lightfront-QED derivation of the coefficients in the Heisenberg-Euler effective action.

Author

V. Dinu

T. Heinzl

Antony Ilderton

Chalmers, Applied Physics, Condensed Matter Theory

Mattias Marklund

Chalmers, Applied Physics, Condensed Matter Theory

Greger Torgrimsson

Chalmers, Applied Physics, Condensed Matter Theory

Physical Review D - Particles, Fields, Gravitation and Cosmology

1550-7998 (ISSN)

Vol. 89 12

Subject Categories

Astronomy, Astrophysics and Cosmology

DOI

10.1103/PhysRevD.89.125003

More information

Created

10/8/2017