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CMB spectral mu-distortion of multiple inflation scenario

Title
CMB spectral mu-distortion of multiple inflation scenario
Authors
Bae, GiminBae, SungjaeChoe, SeunghoLee, Seo HyunLim, JungwonZoe, Hee Seung
DGIST Authors
Choe, Seungho
Issue Date
2018-07
Citation
Physics Letters B, 782, 117-123
Type
Article
Article Type
Article
Keywords
MICROWAVE BACKGROUND SPECTRUMCOSMOLOGICAL HYDROGEN RECOMBINATIONPRIMORDIAL MAGNETIC-FIELDSLOW-SCALE INFLATIONSTRONG CP PROBLEMPOWER SPECTRUMGRAVITATIONAL-WAVESENERGY-SPECTRUMHOT-MODELCONSTRAINTS
ISSN
0370-2693
Abstract
In multiple inflation scenario having two inflations with an intermediate matter-dominated phase, the power spectrum is estimated to be enhanced on scales smaller than the horizon size at the beginning of the second inflation, k>kb. We require kb>10Mpc−1 to make sure that the enhanced power spectrum is consistent with large scale observation of cosmic microwave background (CMB). We consider the CMB spectral distortions generated by the dissipation of acoustic waves to constrain the power spectrum. The μ-distortion value can be 102 times larger than the expectation of the standard ΛCDM model (μΛCDM≃2×10−8) for kb≲103Mpc−1, while the y-distortion is hardly affected by the enhancement of the power spectrum. © 2018 The Author(s)
URI
http://hdl.handle.net/20.500.11750/6560
DOI
10.1016/j.physletb.2018.05.015
Publisher
Elsevier B.V.
Related Researcher
  • Author Choe, Seungho  
  • Research Interests Theoretical Nuclear;Hadron Physics; Theoretical &Computational Biophysic
Files:
There are no files associated with this item.
Collection:
School of Undergraduate Studies1. Journal Articles


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