Lorentz Violation: Motivation and New Constraints

By Stefano Liberati, L. Maccione. 2009

150 citations recorded by the source corpus.

We review the main theoretical motivations and observational constraints on Planck scale–suppressed violations of Lorentz invariance. After introducing the problems related to the phenomenological study of quantum gravitational effects, we discuss the main theoretical frameworks within which possible departures from Lorentz invariance can be described. In particular, we focus on the framework of effective field theory, describing several possible ways of including Lorentz violation therein and discussing their theoretical viability. We review the main low-energy effects that are expected in this framework. We discuss the current observational constraints on such a framework, focusing on those achievable through high-energy astrophysics observations. In this context, we present a summary of the most recent and strongest constraints on quantum electrodynamics with Lorentz-violating nonrenormalizable operators. Finally, we discuss the status of the field and its future perspectives.

Subfields: Astronomy and Astrophysics, Atomic and Molecular Physics, and Optics, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/f3a41e7198a3d61e47bd02050d64572820c019d2

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

In Atomic and Molecular Physics, and Optics

In Statistical and Nonlinear Physics

Citations in the corpus

Zakopane lectures on loop gravity (2011, unknown): “See [134, 135, 1]].”
Black holes in Einstein-aether and Hořava-Lifshitz gravity (2011, background): “Indeed, there are severe observational constraints on Lorentz-violating effects in the matter sector [1, 2].”
Search for New Physics with Atoms and Molecules (2017, background): “Lorentz-violating effects may be suppressed by some power of the ratio R between the electroweak scale and the natural (Planck) energy scale for strings: R = mew/MPl = 2 × 10−17 (Kostelecký and Potting, 1995) or electron mass to Plank scale 4× 10−23 (Liberati and Maccione, 2009).”
Dark matter and fundamental physics with the Cherenkov Telescope Array (2012, background): “Hence over the past decade, there has been tremendous interest in testing Li at high energies as part of what has come to be called ‘quantum gravity phenomenology’ [156–158].”