Smearing of primordial gravitational waves

Abstract

A mechanism for smearing of the primordial gravitational waves during the radiation-dominated phase of the evolution of the Universe is considered. It is shown that the primordial gravitational waves can possess hyperbolicity features due to their propagation through the matter inhomogeneities. This mechanism of smearing can lead to the flattening of the original gravitational wave spectrum and hence has to be taken into account at the interpretation of the properties of primordial gravitational background on the detection of which are oriented ongoing and forthcoming experimental facilities.

8 pages, 4 figs; Eur Phys J Plus (in press)

References in corpus (10)

• Solar system constraints on R${}^n$ gravity
• Addressing the cosmological $H_0$ tension by the Heisenberg uncertainty
• An Improved Test of the General Relativistic Effect of Frame-Dragging Using the LARES and LAGEOS Satellites
• To the center of cold spot with Planck
• Porosity criterion for hyperbolic voids and the cosmic microwave background
• Hubble tension and absolute constraints on the local Hubble parameter
• Flat Universe with Hyperbolic Voids
• Cosmic voids and induced hyperbolicity
• Cosmic voids and induced hyperbolicity. II. Sensitivity to void/wall scales
• Cosmic voids and induced hyperbolicity. III. tracing redshift dependence