Work

New Lorentz-violating nonlocal field theory from string theory

Year: 2007

Type: article

Abstract: 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.

Source: Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields

DOI: 10.1103/physrevd.75.025002

Author: Ori J. Ganor

Institutions: Lawrence Berkeley National Laboratory, University of California, Berkeley

Language: English

Topic: Noncommutative and Quantum Gravity Theories

Subfield: Statistical and Nonlinear Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green