Silicon tracking at high luminosity colliders

Future applications of silicon detectors at high luminosity colliders envision their use after fluences equivalent to 10/sup 14/-10/sup 15/ minimum ionizing particles/cm/sup 2/ (MIP/cm/sup 2/). This requires facing a number of special problems: large bias voltages on the detector, large leakage currents, and thermal instabilities. We present some of the relevant results on these problems as well as a brief review of some of the presently planned detectors.