Three Questions on Lorentz Violation
arXiv:physics/0612171 · doi:10.1088/1742-6596/67/1/012008
Abstract
We review the basics of the two most widely used approaches to Lorentz violation - the Stardard Model Extension and Noncommutative Field Theory - and discuss in some detail the example of the modified spectrum of the synchrotron radiation. Motivated by touching upon such a fundamental issue as Lorentz symmetry, we ask three questions: What is behind the search for Lorentz violation? Is String Theory a physical theory? Is there an alternative to Supersymmetry?
16 pages; invited luecture at DICE2006 - Piombino, Italy - September 2006