A New Lorentz Violating Nonlocal Field Theory From String-Theory

Details A New Lorentz Violating Nonlocal Field Theory From String-Theory A New Lorentz Violating Nonlocal Field Theory From String-Theory

2006-09-14

arxiv.org/abs/hep-th/0609107v3

Phys.Rev.D75:025002,2007

Physics

High Energy Physics

High Energy Physics - Theory

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Scientific paper

10.1103/PhysRevD.75.025002

A four-dimensional field theory with a qualitatively new type of nonlocality is constructed from a setting where Kaluza-Klein particles probe toroidally compactified string theory with twisted boundary conditions. In this theory fundamental particles are not pointlike and occupy a volume proportional to their R-charge. The theory breaks Lorentz invariance but appears to preserve spatial rotations. At low energies, it is approximately N=4 Super Yang-Mills theory, deformed by an operator of dimension seven. The dispersion relation of massless modes in vacuum is unchanged, but under certain conditions in this theory, particles can travel at superluminal velocities.

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