INTERACTIONS BETWEEN ACTIVE DEFECTS IN GLASSES AT LOW-TEMPERATURES

This manuscript describes recent evidence suggesting that interactions between low-lying defects, TLS, in amorphous solids at low temperatur es produce a hole in the distribution of TLS at zero local field which modifies the ACI dielectric constant and sound velocity. These intera ctions are also believed responsible for the anomalous temperature dep endence seen in dielectric and acoustic losses in the low temperature limit.