Experimental Observation of Optical Rotation Generated in Vacuum by a Magnetic Field

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E. Zavattini,¹ G. Zavattini,² G. Ruoso,³ E. Polacco,⁴ E. Milotti,⁵ M. Karuza,¹ U. Gastaldi,³ G. Di Domenico,² F. Della Valle,¹ R. Cimino,⁶ S. Carusotto,⁴ G. Cantatore,¹ and M. Bregant¹

(PVLAS Collaboration)

¹Istituto Nazionale di Fisica Nucleare (INFN), Sezione di Trieste and Università di Trieste, Trieste, Italy
²Istituto Nazionale di Fisica Nucleare (INFN), Sezione di Ferrara and Università di Ferrara, Ferrara, Italy
³Istituto Nazionale di Fisica Nucleare (INFN), Laboratori Nazionali di Legnaro, Legnaro, Italy
⁴Istituto Nazionale di Fisica Nucleare (INFN), Sezione di Pisa and Università di Pisa, Pisa, Italy
⁵Istituto Nazionale di Fisica Nucleare (INFN), Sezione Trieste and Università di Udine, Udine, Italy
⁶Istituto Nazionale di Fisica Nucleare (INFN), Laboratori Nazionali di Frascati, Frascati, Italy

See Also: Editorial Note

Received 29 July 2005; revised 8 February 2006; published 24 March 2006

Wereport the experimental observation of a light polarization rotation invacuum in the presence of a transverse magnetic field. Assumingthat data distribution is Gaussian, the average measured rotation is(3.9±0.5)×10^-12 rad/pass, at 5 T with 44 000 passes through a 1 m longmagnet, with lambda =1064 nm. The relevance of this result in termsof the existence of a light, neutral, spin-zero particle isdiscussed.

URL:	http://link.aps.org/doi/10.1103/PhysRevLett.96.110406
DOI:	10.1103/PhysRevLett.96.110406
PACS:	12.20.Fv; 07.60.Fs; 14.80.Mz 12.20.Fv Experimental tests of quantum electrodynamics 07.60.Fs Optical polarimeters and ellipsometers 14.80.Mz Axions and other Nambu–Goldstone bosons (Majorons, familons, etc.) YEAR: 2006
KEYWORDS:	light polarisation, vacuum (elementary particles), optical rotation, quantum electrodynamics

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Editorial Note: Experimental Observation of Optical Rotation Generated in Vacuum by a Magnetic Field [Phys. Rev. Lett. 96, 110406 (2006)]
E. Zavattini, G. Zavattini, G. Ruoso et al.
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