Inflation in de Sitter spacetime and CMB large scale anomaly

ZHAO Dong; LI Ming-Hua; WANG Ping; CHANG Zhe

doi:10.1088/1674-1137/39/9/095101

Chinese Physics C> 2015, Vol. 39> Issue(9) : 095101 DOI: 10.1088/1674-1137/39/9/095101

Inflation in de Sitter spacetime and CMB large scale anomaly

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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 fit to explore the cosmological parameter space by using the CosmoMC package with the recently released Planck TT and WMAP polarization datasets. Using the results from the global fit, we compute a new CMB temperature-temperature (TT) spectrum. The obtained TT spectrum has lower power compared with that based on the ΛCDM model at large scales.

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ZHAO Dong, LI Ming-Hua, WANG Ping and CHANG Zhe. Inflation in de Sitter spacetime and CMB large scale anomaly[J]. Chinese Physics C, 2015, 39(9): 095101. doi: 10.1088/1674-1137/39/9/095101

ZHAO Dong, LI Ming-Hua, WANG Ping and CHANG Zhe. Inflation in de Sitter spacetime and CMB large scale anomaly[J]. Chinese Physics C, 2015, 39(9): 095101. doi: 10.1088/1674-1137/39/9/095101 shu

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Received: 2014-12-19
Revised: 2015-03-28

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Inflation in de Sitter spacetime and CMB large scale anomaly

Corresponding author: ZHAO Dong,

Received Date: 2014-12-19

Accepted Date: 2015-03-28

Available Online: 2015-09-05

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 fit to explore the cosmological parameter space by using the CosmoMC package with the recently released Planck TT and WMAP polarization datasets. Using the results from the global fit, we compute a new CMB temperature-temperature (TT) spectrum. The obtained TT spectrum has lower power compared with that based on the ΛCDM model at large scales.

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Inflation in de Sitter spacetime and CMB large scale anomaly

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