%0 Journal Article %T The presence of Primordial Gravitational Waves in the Cosmic Microwave Background %A Wytler Cordeiro dos Santos %J Physics %D 2012 %I arXiv %X 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 $10^{5}$. %U http://arxiv.org/abs/1202.1793v2