  We investigate the dynamics of a Bose-Einstein condensate of magnetic atoms
in which the dipoles are rotated by an external magnetic field. The
time-averaged dipole-dipole interaction between the atoms is effectively tuned
by this rotation, however recent experimental and theoretical developments show
that dynamic instabilities emerge that may cause heating. We present
simulations of a realistic tuning sequence in this system, and characterize the
system behavior and the emergence of instabilities. Our results indicate that
the instabilities develop more slowly as the rotation frequency increases, and
indicate that experiments with tuned dipole-dipole interactions should be
feasible.

Quantum Gases