Anomaly-free scalar perturbations with holonomy corrections in loop quantum cosmology
By T. Cailleteau, Jakub Mielczarek, Aurélien Barrau, J. Grain. 2011
202 citations recorded by the source corpus.
Holonomy corrections to scalar perturbations are investigated in the loop quantum cosmology framework. Due to the effective approach, modifications of the algebra of constraints generically lead to anomalies. In order to remove those anomalies, counter terms are introduced. We find a way to explicitly fulfill the conditions for anomaly freedom and we give explicit expressions for the counter terms. Surprisingly, the -scheme naturally arises in this procedure. The gauge-invariant variables are found and equations of motion for the anomaly-free scalar perturbations are derived. Finally, some cosmological consequences are discussed qualitatively.
Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics, Statistical and Nonlinear Physics
View Paper: https://www.semanticscholar.org/paper/60c324b2a609a19c73abee6b182970575a719656
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In Astronomy and Astrophysics
In Nuclear and High Energy Physics
In Statistical and Nonlinear Physics
Citations in the corpus
- The matter bounce scenario in loop quantum cosmology (2012, background): “The corrections have been studied for the cases of a perfect fluid [11] and a scalar field [12, 13].”