Explaining low ℓ anomalies in the CMB power spectrum with resonant superstring excitations during inflation
Abstract
We explore the possibility that both the suppression of the multipole moment of the power spectrum of cosmic microwave background temperature fluctuations and the possible dip for –30 can be explained as well as a possible new dip for as the result of the resonant creation of sequential excitations of a fermionic (or bosonic) closed superstring that couples to the inflaton field. We consider a D = 26 closed bosonic string with one toroidal compact dimension as an illustration of how string excitations might imprint themselves on the CMB. We analyze the existence of successive momentum states, winding states or oscillations on the string as the source of the three possible dips in the power spectrum. Although the evidence of these dips are of marginal statistical significance, this might constitute the first observational evidence of successive superstring excitations in Nature.
- Authors:
-
- Univ. of Notre Dame, IN (United States). Dept. of Physics. Center for Astrophysics; Saha Inst. of Nuclear Physics, Kolkata (India). Theory Division
- Univ. of Notre Dame, IN (United States). Dept. of Physics. Center for Astrophysics; National Astronomical Observatory of Japan, Mitaka (Japan)
- Nagoya Univ. (Japan). Dept. of Physics
- National Astronomical Observatory of Japan, Mitaka (Japan); Univ. of Tokyo (Japan). Graduate School of Science; Beihang Univ., Beijing (China). International Research Center for Big-Bang Cosmology and Element Genesis. School of Physics and Nuclear Energy Engineering
- Publication Date:
- Research Org.:
- University of Notre Dame, IN (United States); National Astronomical Observatory of Japan, Mitaka (Japan); Nagoya Univ. (Japan)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP); Japan Society for the Promotion of Science (JSPS)
- OSTI Identifier:
- 1509985
- Grant/Contract Number:
- FG02-95ER40934; 15H03665; 17K05459; 24340048; 18K03616; 15H05890
- Resource Type:
- Accepted Manuscript
- Journal Name:
- European Physical Journal. C, Particles and Fields
- Additional Journal Information:
- Journal Volume: 78; Journal Issue: 9; Journal ID: ISSN 1434-6044
- Publisher:
- Springer
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Citation Formats
Gangopadhyay, Mayukh R., Mathews, Grant J., Ichiki, Kiyotomo, and Kajino, Toshitaka. Explaining low ℓ anomalies in the CMB power spectrum with resonant superstring excitations during inflation. United States: N. p., 2018.
Web. doi:10.1140/epjc/s10052-018-6218-x.
Gangopadhyay, Mayukh R., Mathews, Grant J., Ichiki, Kiyotomo, & Kajino, Toshitaka. Explaining low ℓ anomalies in the CMB power spectrum with resonant superstring excitations during inflation. United States. https://doi.org/10.1140/epjc/s10052-018-6218-x
Gangopadhyay, Mayukh R., Mathews, Grant J., Ichiki, Kiyotomo, and Kajino, Toshitaka. Wed .
"Explaining low ℓ anomalies in the CMB power spectrum with resonant superstring excitations during inflation". United States. https://doi.org/10.1140/epjc/s10052-018-6218-x. https://www.osti.gov/servlets/purl/1509985.
@article{osti_1509985,
title = {Explaining low ℓ anomalies in the CMB power spectrum with resonant superstring excitations during inflation},
author = {Gangopadhyay, Mayukh R. and Mathews, Grant J. and Ichiki, Kiyotomo and Kajino, Toshitaka},
abstractNote = {We explore the possibility that both the suppression of the ℓ = 2 multipole moment of the power spectrum of cosmic microwave background temperature fluctuations and the possible dip for ℓ = 10 –30 can be explained as well as a possible new dip for ℓ ≈ 60 as the result of the resonant creation of sequential excitations of a fermionic (or bosonic) closed superstring that couples to the inflaton field. We consider a D = 26 closed bosonic string with one toroidal compact dimension as an illustration of how string excitations might imprint themselves on the CMB. We analyze the existence of successive momentum states, winding states or oscillations on the string as the source of the three possible dips in the power spectrum. Although the evidence of these dips are of marginal statistical significance, this might constitute the first observational evidence of successive superstring excitations in Nature.},
doi = {10.1140/epjc/s10052-018-6218-x},
journal = {European Physical Journal. C, Particles and Fields},
number = 9,
volume = 78,
place = {United States},
year = {Wed Sep 12 00:00:00 EDT 2018},
month = {Wed Sep 12 00:00:00 EDT 2018}
}
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Figures / Tables:
Fig. 1: The fit (red line) to ℓ ≈ 2, ℓ ≈ 20 and ℓ ≈ 60 suppression of the TT CMB power spectrum as described in the text. Points with error bars are from the Planck Data Release [14]. The green line shows the best standard ΛCDM power-law fitmore »
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Works referencing / citing this record:
Study in the noncanonical domain of Goldstone inflation
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