Journal
INTERNATIONAL JOURNAL OF MODERN PHYSICS A
Volume 22, Issue 26, Pages 4797-4823Publisher
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0217751X07037081
Keywords
quantum fields in noninertial reference frames; Solokolov-Ternov effect; Unruh effect
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We show that the Sokolov-Ternov effect - the depolarization of particles in storage rings coming from synchrotron radiation due to spin flip transitions - is physically equivalent to the Unruh effect for circular acceleration if one uses a spin-1/2 particle as the Unruh-DeWitt detector. It is shown that for the electron, with gyromagnetic number g approximate to 2, the exponential contribution to the polarization, which usually characterizes the Unruh effect, is hidden in the standard Sokolov Ternov effect making it hard to observe. Thus, our conclusions are different in detail from previous work.
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