We address the problem of accounting for light neutrino masses in theories
with dynamical electroweak symmetry breaking. We discuss this in the context of
a class of (extended) technicolor (ETC) models and analyze the full set of
Dirac and Majorana masses that arise in such theories. As a possible solution,
we propose a combination of suppressed Dirac masses and a seesaw involving
dynamically generated ∣ΔL∣=2 condensates of standard-model singlet,
ETC-nonsinglet fermions. We show how this can be realized in an explicit ETC
model. An important feature of this proposal is that, because of the
suppression of Dirac neutrino mass terms, a seesaw yielding realistic neutrino
masses does not require superheavy Majorana masses; indeed, these Majorana
masses are typically much smaller than the largest ETC scale.Comment: 13 pages, latex; simplified mode