  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".
