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Experimental observation of optical rotation generated in vacuum by a magnetic field

E. Zavattini·G. Zavattini·G. Ruoso·E. Polacco·E. Milotti·M. Karuza·U. Gastaldi·G. Di Domenico·F. Della Valle·R. Cimino·S. Carusotto·G. Cantatore·M. Bregant
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Abstract

We report the experimental observation of a light polarization rotation in vacuum in the presence of a transverse magnetic field. Assuming that data distribution is Gaussian, the average measured rotation is (3.9+/-0.5)e-12 rad/pass, at 5 T with 44000 passes through a 1m long magnet, with lambda = 1064 nm. The relevance of this result in terms of the existence of a light, neutral, spin-zero particle is discussed.

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E. Zavattini, G. Zavattini, G. Ruoso, E. Polacco, E. Milotti, M. Karuza, U. Gastaldi, G. Di Domenico, F. Della Valle, R. Cimino, S. Carusotto, G. Cantatore, M. Bregant. 2006-02-08. Experimental observation of optical rotation generated in vacuum by a magnetic field. https://doi.org/10.1103/physrevlett.96.110406%2010.1103%2Fphysrevlett.99.129901

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