Radiative Plateau Inflation with Conformal Invariance: Dynamical
  Generation of Electroweak and Seesaw Scales
  We investigate in scale-invariant $B-L$ scenario where the Standard Model
(SM) is supplemented with a dark scalar $\phi$ associated with gauge \& Yukawa
interactions, described by the couplings $g_{BL}$ and $y$ respectively, leading
to radiative plateau inflation at scale $\phi=M$ in the ultraviolet (UV), while
dynamically generating the Electroweak and Seesaw scales via Coleman-Weinberg
in the infrared (IR). This is particularly achieved implementing threshold
correction at an energy scale $\mu_T$ arising due to the presence of
vector-like fermions. We show that implementing the inflationary observables
makes the couplings solely dependent on the plateau scale or inflection-point
scale $M$, leaving us with only two independent parameters $M$ and $\mu_T$.
Within the theoretically consistent parameter space regions defined by
$m_{Z_{BL}} > 850~\rm GeV$, from the assumption of independent evolution of the
dark sector couplings from the SM couplings and $M < 5.67$ times the Planck
scale ($M_P$) required for the realisation of inflationary plateau-like
behaviour of the potential around $\phi=M$, we identify the parameter space
that is excluded by current LHC results involving searches for the heavy
$Z_{BL}$ boson. For typical benchmark points in the viable parameter regions,
we estimate the reheating temperature to be $\sim\mathcal{O}(TeV)$ thus
consistent with the standard Big Bang Nucleosynthesis (BBN) constraints. For
typical benchmark points ($M=5.67,~1,~0.1~M_P$) we predict the scales of
inflation to be $\mathcal{H}_{inf}=2.79\times10^{12}$ GeV, $1.53\times10^{10}$
GeV and $1.53\times10^7$ GeV respectively.
