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Constraints on cosmological parameters from Planck and BICEP2 data

2014/07/30 by Luis A. Anchordoqui, Anchordoqui, Luis A.
Earth and Planetary Sciences · Physics and Astronomy · #Amplitude #Cosmology and Gravitation Theories #Cosmology and Nongalactic Astrophysics (astro-ph.CO) #Degrees of freedom (physics and chemistry) #FOS: Physical sciences #Geophysics and Gravity Measurements #Gravitational wave #High Energy Physics - Phenomenology (hep-ph) #Inflation (cosmology) #Physics #Planck #Planck energy #Planck scale #Quantum #Quantum gravity #Quantum mechanics #Solar and Space Plasma Dynamics #Theoretical physics #astro-ph.CO #hep-ph

paper · pdf · doi:10.48550/arxiv.1407.8105

Based on talks given at the II Argentinian-Brazilian Meeting on Gravitation, Astrophysics, and Cosmology (GrACo2), Buenos Aires, 22-25 April 2014, and at the 2014 Phenomenology Symposium, University of Pittsburgh, 5-7 May 2014. To be published in the GrACo2 Conference Proceedings, Workshop Series of the Asociacion Argentina de Astronomia; eds. G. S. Vila, F. L. Vieyro, and J. Fabris

arxiv created 2014/07/30 · openalex publication_date 2014/07/30 · arxiv updated 2014/07/31 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We show that the tension introduced by the detection of large amplitude gravitational wave power by the BICEP2 experiment with temperature anisotropy measurements by the Planck mission is alleviated in models where extra light species contribute to the effective number of relativistic degrees of freedom. We also show that inflationary models based on S-dual potentials are in agreement with Planck and BICEP2 data.

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