Regular Article - Theoretical Physics
Probing noncommutative space-time in the laboratory frame
Institute of Humanities and Sciences and Department of Physics, Ochanomizu University, 2-1-1 Otsuka, Bunkyo, Tokyo, 112-8610, Japan
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Revised: 31 May 2006
Published online: 3 August 2007
The phenomenological investigation of noncommutative space-time in the laboratory frame is presented. We formulate the apparent time variation of noncommutativity parameter θμν in the laboratory frame due to the earth’s rotation. Furthermore, in the noncommutative QED, we discuss how to probe the electric-like component θ E =(θ01,θ02,θ03) by the process at future e-e+ linear collider. We may determine the magnitude and the direction of θ E by detailed study of the apparent time variation of the total cross-section. If no signal is observed, the upper limit on the magnitude of θ E can be determined independent of its direction.
© Springer-Verlag , 2007