Loop Quantum Gravity Phenomenology: Linking Loops to Observational Physics

Symmetry Integrability and Geometry-Methods and Applications

article

Florian Girelli¹  Franz Hinterleitner³  Seth A. Major⁴ 

[1] Department of Applied Mathematics, University of Waterloo;University Erlangen-Nuremberg, Institute for Theoretical Physics III;Department of Theoretical Physics and Astrophysics, Faculty of Science of the Masaryk University;Department of Physics, Hamilton College

关键词: quantum gravity;    loop quantum gravity;    quantum gravity phenomenology;    modified dispersion relation;   

DOI  :  10.3842/SIGMA.2012.098

来源: National Academy of Science of Ukraine

【 摘 要 】

Research during the last decade demonstrates that effects originating on the Planck scale are currently being tested in multiple observational contexts. In this review we discuss quantum gravity phenomenological models and their possible links to loop quantum gravity. Particle frameworks, including kinematic models, broken and deformed Poincaré symmetry, non-commutative geometry, relative locality and generalized uncertainty principle, and field theory frameworks, including Lorentz violating operators in effective field theory and non-commutative field theory, are discussed. The arguments relating loop quantum gravity to models with modified dispersion relations are reviewed, as well as, arguments supporting the preservation of local Lorentz invariance. The phenomenology related to loop quantum cosmology is briefly reviewed, with a focus on possible effects that might be tested in the near future. As the discussion makes clear, there remains much interesting work to do in establishing the connection between the fundamental theory of loop quantum gravity and these specific phenomenological models, in determining observational consequences of the characteristic aspects of loop quantum gravity, and in further refining current observations. Open problems related to these developments are highlighted.

【 授权许可】

Unknown