  Supersymmetric theories generally have new flavor violation sources in the
squark and slepton mass matrices. If significant lepton flavor violation
exists, selectron and smuon should be nearly degenerate. This leads to the
phenomenon of slepton oscillations, which is analogous to neutrino
oscillations, if sleptons are produced at the Next Linear Collider. The direct
slepton production at the Next Linear Collider provides a much more powerful
probe of lepton flavor violation than the current bounds from rare processes,
such as $\mu \to e\gamma$.
