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

The second order perturbation calculations for gravity wave and Einsteinequation for space time and matter are presented for the FRW metriccosmological model. While exact equations are found, suitable approximationsare made to obtain definite results. In the gravity wave case the smallwavelength case allows nearly locally flat background for obtaining a fit tothe WMAP data. In the density and curvature case the FRW background is retainedfor the length scale of WMAP. Clustering and inhomogeneity are understood. Thegravity wave ripples from Big Bang couple nonlinearly and redistribute themodes to higher values of 'l' giving consistency with the WMAP results. Theorder by order consistency of Einstein equations relate the second orderperturbations in the curvature and density and the wrinkles in spacetime causedby the gravity wave modes reorganize these distributions. The radiation data ofWMAP gives the picture of a FRW spacetime deformed and wrinkled consistent withmatter distribution to one hundred thousandths parts variation.

Cosmological Perturbation Theory to second order for curvature, density,  and gravity waves on FRW background; and the WMAP results of inhomogeneity  and clustering in the early universe