Precritical Chiral Fluctuations in Nuclei

Abstract

Spectral enhancement near 2 m_π threshold in the I=J=0 channel in nuclei is shown to be a distinct signal of the partial restoration of chiral symmetry. The relevance of this phenomenon with possible detection of 2π^{0} and 2γin hadron-nucleus and photo-nucleus reactions is discussed.

6 pages, 3 ps figures, uses sprocl.sty Talk at 1998 YITP-workshop on QCD and Hadron Physics (Oct. 14-18, 1998, Kyoto, Japan)