  Background: [elided for arXiv character count] Purpose: With the advancement
of computational power it is now possible to undertake TDHF calculations
without any symmetry assumptions and incorporate the major strides made by the
nuclear structure community in improving the energy density functionals used in
these calculations. In particular, time-odd and tensor terms in these
functionals are naturally present during the dynamical evolution, while being
absent or minimally important for most static calculations. The parameters of
these terms are determined by the requirement of Galilean invariance or local
gauge invariance but their significance for the reaction dynamics have not been
fully studied. This work addresses this question with emphasis on the tensor
force. Method: The full version of the Skyrme force, including terms arising
only from the Skyrme tensor force, is applied to the study of collisions within
a completely symmetry-unrestricted TDHF implementation. Results: We examine the
effect on fusion thresholds with and without the tensor force terms and find an
effect on the fusion threshold energy of the order several MeV. Details of the
distribution of the energy within terms in the energy density functional is
also discussed. Conclusions: Terms in the energy density functional linked to
the tensor force can play a non-negligible role in dynamic processes in nuclei,
including those in which the terms do not affect ground state properties.
