期刊
PHYSICAL REVIEW LETTERS
卷 125, 期 5, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.125.051302
关键词
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资金
- NSF [PHY-1505411, PHY-1806356]
- NASA ATP Grant [80NSSC18K1103]
- Eberly research funds of Penn State
- Inter-University Centre for Astronomy and Astrophysics, Pune
Certain anomalies in the CMB bring out a tension between the six-parameter flat ACDM model and the CMB data. We revisit the PLANCK analysis with loop quantum cosmology (LQC) predictions and show that LQC alleviates both the large-scale power anomaly and the tension in the lensing amplitude. These differences arise because, in LQC, the primordial power spectrum is scale dependent for small k, with a specific power suppression. We conclude with a prediction of larger optical depth and power suppression in the B-mode polarization power spectrum on large scales.
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