  It has been proposed that there are new degrees of freedom intrinsic to
quantum critical points that contribute to quantum critical physics. We study
2+1 D antiferromagnets in order to explore possible new quantum critical
physics arising from nontrivial topological effects. We show that skyrmion
excitations are stable at criticality and have nonzero probability at
arbitrarily low temperatures. To include quantum critical skyrmion effects, we
find a class of exact solutions composed of skyrmion and antiskyrmion
superpositions, which we call topolons. We include the topolons in the
partition function and renormalize by integrating out small size topolons and
short wavelength spin waves. We obtain a correlation length critical exponent
nu=0.9297 and anomalous dimension eta=0.3381.
