Possibility to measure elastic photon-photon scattering in vacuum

Daniel Eriksson, Gert Brodin, Mattias Marklund, Lennart Stenflo
2004 Physical Review A. Atomic, Molecular, and Optical Physics  
Photon--photon scattering in vacuum due to the interaction with virtual electron-positron pairs is a consequence of quantum electrodynamics. A way for detecting this phenomenon has been devised based on interacting modes generated in microwave waveguides or cavities [G. Brodin, M. Marklund and L. Stenflo, Phys. Rev. Lett. 87 171801 (2001)]. Here we materialize these ideas, suggest a concrete cavity geometry, make quantitative estimates and propose experimental details. It is found that
more » ... found that detection of photon-photon scattering can be within the reach of present day technology.
doi:10.1103/physreva.70.013808 fatcat:szffj7bldvgvbhr2qdnkajzdpm