A polarisation modulation scheme for measuring vacuum magnetic birefringence with static fields

Vacuum Birefringence in a Rotating Magnetic Field

We calculate the vacuum polarization-induced ellipticity acquired by a linearly polarized laser beam of angular frequency ω̄ on traversing a region containing a transverse magnetic field rotating with a small angular velocity Ω around the beam axis. The transmitted beam contains the fundamental frequency ω̄ and weak sidebands of frequency ω̄±2Ω, but no other sidebands. To first order in small quan...

Vacuum birefringence in strong inhomogeneous electromagnetic fields

Magnetic Linear Birefringence Measurements Using Pulsed Fields

Vacuum Polarisation Tensors in Constant Electromagnetic Fields: Part I

The string-inspired technique is used for the calculation of vacuum polarisation tensors in constant electromagnetic fields. In the first part of this series, we give a detailed exposition of the method for the case of the QED one-loop N-photon amplitude in a general constant electromagnetic background field. The twopoint cases are calculated explicitly, leading to compact representations for t...

Vacuum Polarisation Tensors in Constant Electromagnetic Fields: Part II

In the second part of this series we apply the “string-inspired” technique to the calculation of one-loop amplitudes involving both vectors and axialvectors, as well as a general constant electromagnetic background field. The vector-axialvector two-point function in a constant field is calculated explicitly.