Inflation in de Sitter spacetime and CMB large scales anomaly

Abstract

The influence of cosmological constant type dark energy in the early universe is investigated. This is accommodated by a new dispersion relation in de Sitter spacetime. We perform a global fitting to explore the cosmological parameters space by using the CosmoMC package with the recently released Planck TT and WMAP Polarization datasets. Using the results from global fitting, we compute a new CMB temperature-temperature spectrum. The obtained TT spectrum has lower power compared with the one based on $\Lambda$CDM model at large scales.

4 pages, 1 table, 3 figures

References in corpus (4)

• Planck 2013 results. XVI. Cosmological parameters
• Snyder's Model -- de Sitter Special Relativity Duality and de Sitter Gravity
• Snyder's Quantized Space-time and De Sitter Special Relativity
• Towards a CPT Invariant Quantum Field Theory on Elliptic de Sitter Space

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