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The proposed experiment at DESY follows the discovery earlier this year by the PVLAS collaboration in Italy that the polarization of a light beam through a vacuum can be rotated by setting up a magnetic field in the vacuum. According to quantum mechanics, vacuums are full of activity, with particle–antiparticle pairs continually being created and destroyed within them. Magnetic fields interact with these particles and disturb the vacuum, causing light to twist as it passes through. The PVLAS results cannot, however, be explained by standard quantum theory. This has led some scientists to hypothesize that a fraction of the photons in the experiment were converted to axion-like particles.
In the DESY experiment, the laser beam would be sent through a vacuum in the presence of a magnetic field and then into a wall. The idea is that a fraction of the laser photons will transform into the new particles, which then pass through the wall because they interact so weakly with other matter. Another magnetic field located on the other side of the wall will then transform some of these new particles back into photons – apparently regenerating photons out of nothing (arXiv.org/abs/hep-ex/0606058). Ringwald and colleagues plan to run an initial experiment towards the end of 2006, and then, if they do discover axions, carry out a second experiment to investigate the detailed properties of the particle in autumn 2007.
) Which has really meant that all scientists have to revaluate Red Shift Results.