Suppression of longwavelength CMB spectrum from the noboundary initial condition
Abstract
The lack of correlations at the longwavelength scales of the cosmic microwave background spectrum is a longstanding puzzle and it persists in the latest Planck data. By considering the Hartle–Hawking noboundary wave function as the initial condition of the inflationary universe, we propose that the power suppression can be the consequence of a massive inflaton, whose initial vacuum is the Euclidean instanton in a compact manifold. We calculate the primordial power spectrum of the perturbations, and find that as long as the scalar field is moderately massive, the power spectrum is suppressed at the longwavelength scales.
 Authors:

 National Taiwan Univ., Taipei (Taiwan); SLAC National Accelerator Lab., Menlo Park, CA (United States); Stanford Univ., CA (United States)
 National Taiwan Univ., Taipei (Taiwan)
 National Taiwan Univ., Taipei (Taiwan); The Asia Pacific Center for Theoretical Physics, Pohang (South Korea); POSTECH, Pohang (South Korea)
 Publication Date:
 Research Org.:
 SLAC National Accelerator Lab., Menlo Park, CA (United States)
 Sponsoring Org.:
 USDOE
 OSTI Identifier:
 1490620
 Grant/Contract Number:
 AC0276SF00515
 Resource Type:
 Accepted Manuscript
 Journal Name:
 European Physical Journal. C, Particles and Fields
 Additional Journal Information:
 Journal Volume: 78; Journal Issue: 11; Journal ID: ISSN 14346044
 Publisher:
 Springer
 Country of Publication:
 United States
 Language:
 English
 Subject:
 79 ASTRONOMY AND ASTROPHYSICS
Citation Formats
Chen, Pisin, Lin, YuHsiang, and Yeom, Donghan. Suppression of longwavelength CMB spectrum from the noboundary initial condition. United States: N. p., 2018.
Web. doi:10.1140/epjc/s1005201864264.
Chen, Pisin, Lin, YuHsiang, & Yeom, Donghan. Suppression of longwavelength CMB spectrum from the noboundary initial condition. United States. doi:10.1140/epjc/s1005201864264.
Chen, Pisin, Lin, YuHsiang, and Yeom, Donghan. Wed .
"Suppression of longwavelength CMB spectrum from the noboundary initial condition". United States. doi:10.1140/epjc/s1005201864264. https://www.osti.gov/servlets/purl/1490620.
@article{osti_1490620,
title = {Suppression of longwavelength CMB spectrum from the noboundary initial condition},
author = {Chen, Pisin and Lin, YuHsiang and Yeom, Donghan},
abstractNote = {The lack of correlations at the longwavelength scales of the cosmic microwave background spectrum is a longstanding puzzle and it persists in the latest Planck data. By considering the Hartle–Hawking noboundary wave function as the initial condition of the inflationary universe, we propose that the power suppression can be the consequence of a massive inflaton, whose initial vacuum is the Euclidean instanton in a compact manifold. We calculate the primordial power spectrum of the perturbations, and find that as long as the scalar field is moderately massive, the power spectrum is suppressed at the longwavelength scales.},
doi = {10.1140/epjc/s1005201864264},
journal = {European Physical Journal. C, Particles and Fields},
number = 11,
volume = 78,
place = {United States},
year = {2018},
month = {11}
}
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Figures / Tables:
FIG. 1: The power spectrum obtained by numerically solving the perturbations with $\tilde{m}$ = 0, H_{0} = $\sqrt{8π/3}$.
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Figures / Tables found in this record:
Figures/Tables have been extracted from DOEfunded journal article accepted manuscripts.