Signatures of Planck-scale interactions in the cosmic microwave background?
General Relativity and Quantum Cosmology
2008-11-26 v1
Abstract
Based on a rather general low-energy effective action (interacting quantum fields in classical curved space-times), we calculate potential signatures of new physics (such as quantum gravity) at ultra-high energies (presumably the Planck scale) in the anisotropies of the cosmic microwave background. These Planck-scale interactions create non-Gaussian contributions, where special emphasis is laid on the three-point function as the most promising observable, which also allows the discrimination between models violating and those obeying Lorentz invariance. PACS: 98.80.Cq, 04.62.+v, 98.70.Vc, 98.80.Qc.
Keywords
Cite
@article{arxiv.gr-qc/0601108,
title = {Signatures of Planck-scale interactions in the cosmic microwave background?},
author = {Friedemann Queisser and Michael Uhlmann and Ralf Schützhold},
journal= {arXiv preprint arXiv:gr-qc/0601108},
year = {2008}
}
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4 pages