Observers and Their Notion of Spacetime beyond Special Relativity

Abstract

It is plausible that quantum gravity effects may lead us to a description of Nature beyond the framework of special relativity. In this case, either the relativity principle is broken or it is maintained. These two scenarios (a violation or a deformation of special relativity) are very different, both conceptually and phenomenologically. We discuss some of their implications on the description of events for different observers and the notion of spacetime.

Keywords

• Lorentz invariance violation
• doubly special relativity
• noncommutative spacetime
• photon time delay experiments
• relative locality