QG3 - Loop quantum gravity: cosmology and black holes |
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Speaker |
Martineau, Killian |
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Coauthors |
Barrau,Aurélien; Grain,Julien; Schander,Susanne |
| Talk Title |
Trans-Planckian Effects And Detailed Background Dynamics In Loop Quantum Cosmology |
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Abstract |
Cosmology appears as the most promising way to test and constrain quantum gravity theories. Loop Quantum Gravity (LQG) is among the most promising attempts to perform a non-perturbative quantization of general relativity. Its cosmological symmetry reduced version, Loop Quantum Cosmology (LQC), has clear predictions both for the cosmological background and for the perturbations. In particular, the initial Big Bang singularity is replaced by a bounce due to quantum geometry effects. In this talk I will briefly review the main LQC results and I will focus on new results : i) the prediction of the duration of inflation as a function of all the unknown parameters of the model and ii) new primordial power spectra obtained with modified dispersion relations accounting for trans-planckian effects. |
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