  Previous work on the IR regime approximation of QCD in which the dominant
contribution comes from a dressed two-gluon effective metric-like field
$G_{\mu\nu} = g_{ab} A^{a}_{\mu} A^{b}_{\nu}$ ($g_{ab}$ a color SU(3) metric)
is reviewed. The QCD gauge is approximated by effective
"chromodiffeomorphisms", i.e. by a gauge theory based on a
pseudo-diffeomorphisms group. The second-quantized $G_{\mu\nu}$ field, together
with the Lorentz generators close on the $\bar{SL}(4,R)$ algebra. This algebra
represents a spectrum generating algebra for the set of hadron states of a
given flavor - hadronic "manifields" transforming w.r.t. $\bar{SL}(4,R)$
(infinite-dimensional) unitary irreducible representations. The equations of
motion for the effective pseudo-gravity are derived from a quadratic action
describing Riemannian pseudo-gravity in the presence of shear ($\bar{SL}(4,R)$
covariant) hadronic matter currents. These equations yield $p^{-4}$
propagators, i.e. a linearly rising confining potential $H(r) \sim r$, as well
as linear $J \sim m^{2}$ Regge trajectories. The $\bar{SL}(4,R)$ symmetry based
dynamical theory for the QCD IR region is successfully applied to hadron
resonances. The pseudo-gravity potential reaches over to Nuclear Physics, where
its $J^{P} = 2^{+}, 0^{+}$ quanta provide for the ground state excitations of
the Arima-Iachello Interacting Boson Model.
