English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We calculate the CMB anisotropy power spectrum of a closed universe for largeangle (i.e., low $l$) due to a scale invariant fluctuation of primordialuniverse by considering the spherical harmonics for 3-sphere. In particular,contrary to the wide belief, we show that this consideration affects the CMBanisotropy power spectrum; instead of constant $l(l+1)C_l$, our considerationresults in the supression for $l=2$, currently explained by the cosmicvariance. As a more concrete proof of our analysis, from the low $l$ CMBanisotropy data \emph{alone}, we obtained$\Omega_{\mathrm{tot}}=1.0018^{+0.0031}_{-0.0007}$, which agrees with$\Omega_{\mathrm{tot}}=1.0023^{+ 0.0056}_{- 0.0054}$ from the previous anlaysisof WMAP+BAO+$H_0$. Thus, we conclude that our Universe is closed.

CMB anisotropy power spectrum of 3-sphere universe for low $l$