  We analyze the phase diagram in effective chiral quark models (the
Nambu-Jona-Lasinio model, the sigma-model with quarks) and show that at the
mean-field level a phase with a periodically-modulated chiral fields separates
the usual phases with broken and restored chiral symmetry. A possible signal of
such a phase is the production of multipion jets travelling in opposite
directions, with individual pions having momenta of the order of several
hundred MeV. This signal can be interpreted in terms of disoriented chiral
condensates.
