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Journal Article

Planck 2013 results support the cyclic universe

MPS-Authors
http://pubman.mpdl.mpg.de/cone/persons/resource/persons16239

Lehners,  Jean-Luc
Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, Golm, DE;

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Fulltext (public)

1304.3122
(Preprint), 114KB

PRD87_123533.pdf
(Any fulltext), 105KB

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There is no public supplementary material available
Citation

Lehners, J.-L., & Steinhardt, P. J. (2013). Planck 2013 results support the cyclic universe. Physical Review D, 87(12): 123533. doi:10.1103/PhysRevD.87.123533.


Cite as: http://hdl.handle.net/11858/00-001M-0000-000E-FC8C-4
Abstract
We show that results from the Planck satellite reported in 2013 are consistent with the simplest cyclic models for natural parameter ranges i.e., order unity dimensionless coefficients, assuming the standard entropic mechanism for generating curvature perturbations. With improved precision, forthcoming results from Planck and other experiments should be able to test the parameter ranges by confirming or refuting the core predictions - i.e., no observable primordial B-mode polarization and detectable local non-gaussianity. A new prediction, given the Planck 2013 constraints on the bispectrum, is a sharp constraint on the local trispectrum parameter g_{NL}; namely, the simplest models predict it is negative, with g_{NL} < -1700.