Primordial gravity's breath

Details Primordial gravity's breath Primordial gravity's breath

2011-10-08

arxiv.org/abs/1110.1772v1

EJTP 9, 26, 1-10 (2012)

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

11 pages, accepted for publication in Electronic Journal of Theoretical Physics

Scientific paper

By releasing a formula that directly connects the average amplitude of the relic stochastic gravitational-wave background (SGWB) with the Inflaton field and the equation for the characteristic amplitude h_c for the relic SGWB, in this paper the upper bounds on the relic SGWB from the Wilkinson Microwave Anisotropy Probe (WMAP) and the Laser Interferometer Gravitational-wave Observatory (LIGO) Scientific Collaboration (LSC) data are translated in lower bounds on the Inflaton field. The results show that the value of the Inflaton field that arises from the WMAP bound on the relic SGWB is totally consistent with the famous slow roll condition on Inflation, while the value of the Inflaton field that arises from the LSC bound on the relic SGWB could not be consistent with such a condition. In any case, the analysis in this paper shows that the detection of the SGWB will permit a direct measure of the value of the Inflaton field by giving an extraordinary precious and precise information about the early Universe's dynamics. In other words, the detection of the SGWB will permit to auscultate the "primordial gravity's breath".

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