PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES, vol.64, no.4, pp.509-513, 1991 (SCI-Expanded)
Continuum line defects are modelled by a theory of SO(3) connections in the orthonormal frame bundle over the body manifold of a solid. Variations of the Chern-Simons free-energy integral lead to spaces of constant curvature and constant torsion as equilibrium configurations.