Physics at e+e- Linear Colliders

Abstract

I discuss the motivation and physics potential of an electron-positron linear collider with a center-of-mass energy at the 1 TeV scale, in light of what we may expect to learn with the LHC. The comparison is illustrated with examples drawn from Higgs physics, top quark physics, and the search for large extra spacetime dimensions.

Comments: 6 pages, 5 figures, to appear in the proceedings of the 5th International Conference on Physics Potential and Development of mu+mu- Colliders (MUMU99), Dec. 15-17, 1999