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GR: Gravitation und Relativitätstheorie

GR 2: Experimentelle Tests, Quantengravitation

GR 2.8: Fachvortrag

Dienstag, 16. März 2004, 16:50–17:10, H20

Large-scale non-locality in “doubly special relativity” — •Ralf Schützhold^1,2 and William G. Unruh² — ¹Institut für Theoretische Physik, Technische Universität Dresden, 01062 Dresden — ²Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1

There are two major alternatives for violating the (usual) Lorentz invariance at large (Planckian) energies or momenta – either not all inertial frames (in the Planck regime) are equivalent (e.g., there is an effectively preferred frame) or the transformations from one frame to another are (non-linearly) deformed (“doubly special relativity”). We demonstrate that the natural (and reasonable) assumption of an energy-dependent speed of light in the latter method goes along with violations of locality/separability (and even translational invariance) on macroscopic scales.