Abstract

The status of various proposals for obtaining a field theory of chiral fermions from a lattice theory is reviewed. Aside from giving a general summary of the models currently being considered and the status of what is known about each, I explain in some more detail recent work indicating that several models including models due to Smit and Swift and to Eichten and Preskill do not result in a continuum theory of chiral fermions, and I also review a new and interesting proposal by Kaplan for obtaining a chiral fermion spectrum in even dimensions by exploiting known results about theories in one higher dimension.

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