Constraining the kinetically dominated universe
Constraining the kinetically dominated universe
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限制动力学主导的宇宙
DOI:
10.1103/physrevd.100.023501
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发表时间:
2019
影响因子:
5
通讯作者:
Hergt L
中科院分区:
文献类型:
--
作者:
Hergt L
We present cosmological constraints from Planck 2015 data for a Universe that is kinetically dominated at very early times. We perform a Markov chain Monte Carlo analysis to estimate parameters and use nested sampling to determine the evidence for a model comparison of the single-field quadratic and Starobinsky inflationary models with the standardcosmology. In particular we investigate how different amounts of inflation before and after horizon exit affect the primordial power spectrum and subsequently the power spectrum of the cosmic microwave background. We find that the model using kinetically dominated initial conditions for inflation performs similarly well in terms of Bayesian evidence as a model directly starting out in the slow-roll phase, despite having an additional parameter. The data show a slight preference for a cutoff at large scales in the primordial and temperature power spectra.
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DOI:
--
发表时间:
2011-04
期刊:
arXiv: Instrumentation and Methods for Astrophysics
影响因子:
--
作者:
J. Lesgourgues
通讯作者:
J. Lesgourgues
DOI:
10.1086/377225
发表时间:
2003-02
期刊:
The Astrophysical Journal Supplement Series
影响因子:
--
作者:
G. Hinshaw;D. Spergel;L. Verde;R. Hill;S. Meyer;C. Barnès;C. Bennett;M. Halpern;N. Jarosik;A. Kogut;E. Komatsu;M. Limon;L. Page;G. Tucker;J. Weiland;Edward J. Wollack;E. L. W. N. Gsfc;Princeton;Ssai;U. Chicago;Ubc;Brown;Ucla
通讯作者:
G. Hinshaw;D. Spergel;L. Verde;R. Hill;S. Meyer;C. Barnès;C. Bennett;M. Halpern;N. Jarosik;A. Kogut;E. Komatsu;M. Limon;L. Page;G. Tucker;J. Weiland;Edward J. Wollack;E. L. W. N. Gsfc;Princeton;Ssai;U. Chicago;Ubc;Brown;Ucla
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
A. Lewis;S. Bridle
通讯作者:
S. Bridle
影响因子:
5
作者:
C. Destri;H. Vega;N. Sanchez
通讯作者:
N. Sanchez
影响因子:
5
作者:
C. Destri;H. Vega;H. Vega;N. Sanchez
通讯作者:
N. Sanchez