Primordial gravitational waves from the space-condensate inflation model

TL;DR

This paper investigates the primordial gravitational waves produced by the space-condensate inflation model, analyzing their energy spectrum across all frequencies and identifying a suppression linked to an early phase transition during inflation.

Contribution

It introduces a detailed calculation of the gravitational wave spectrum in the space-condensate inflation model, highlighting the impact of an early phase transition on spectrum suppression.

Findings

Energy spectrum suppression at decreasing frequencies

Suppression linked to early phase transition during inflation

Spectrum calculated over the full frequency range

Abstract

We consider the space-condensate inflation model to study the primordial gravitational waves generated in the early Universe. We calculate the energy spectrum of gravitational waves induced by the space-condensate inflation model for full frequency range with assumption that the phase transition between two consecutive regimes to be abrupt during evolution of the Universe. The suppression of energy spectrum is found in our model for the decreasing frequency of gravitational waves depending on the model parameter. To realize the suppression of energy spectrum of the primordial gravitational waves, we study an existence of the early phase transition during inflation for the space-condensate inflation model.