  Recently, the CMS Collaboration has published identified particle transverse
momentum spectra in high multiplicity events at LHC energies $\sqrt s $ =
0.9-13 TeV. In the present work the transverse momentum spectra have been
analyzed in the framework of the color fields inside the clusters of
overlapping strings, which are produced in high energy hadronic collisions. The
non-Abelian nature is reflected in the coherence sum of the color fields which
as a consequence gives rise to an enhancement of the transverse momentum and a
suppression of the multiplicities relative to the non overlapping strings.
  The initial temperature and shear viscosity to entropy density ratio $\eta/s$
are obtained. For the higher multiplicity events at $\sqrt s $ =7 and 13 TeV
the initial temperature is above the universal hadronization temperature and is
consistent with the creation of de-confined matter. In these small systems it
can be argued that the thermalization is a consequence of the quantum tunneling
through the event horizon introduced by the confining color fields, in analogy
to the Hawking-Unruh effect. The small shear viscosity to entropy density ratio
$\eta/s$ near the critical temperature suggests that the matter is a strongly
coupled Quark Gluon Plasma.
