The presence of Primordial Gravitational Waves in the Cosmic Microwave Background

TL;DR

This paper argues that primordial gravitational waves generated by the CMB's energy can cause measurable temperature shifts in the Cosmic Microwave Background, with specific amplitude and wavelength.

Contribution

It demonstrates that large-scale primordial gravitational waves can produce detectable temperature anisotropies in the CMB.

Findings

Primordial gravitational waves have amplitude ~10^{-5}.

Waves with wavelength ~10 megaparsecs cause temperature shifts of about 10^{-5}.

The study links gravitational wave energy to observable CMB temperature variations.

Abstract

The General Relativity affirms that any field is a source of gravitational field, thus one should affirm that the energy of Cosmic Microwave Background (CMB) generated primordial gravitational waves. The present article shows that a gravitational wave with dimensionless amplitude $\sim 10^{-5}$ and large wave length $\sim 10$ megaparsecs shifts temperature of CMB radiation about of a part in $10^{5}$.