Anharmonic Properties Near Structural Phase Transitions: An Update

摘要: Upon preparing these two lectures, I reread the manuscript on subjects presented at NATO Spring School in Norway 1981 [1] (sometimes referred to as hereafter). Having done this, concluded that context which they were given and presentation made not only “still” really valid, but possibly could even do better now. However, intervening years have elapsed since School, a number of new results been published helped round off picture then. Therefore, decided write an update, is, briefly comment status it was particular subject, then summarize what is then, or forgotten time. If no become available either theoretically experimentally, shall refer those here. In so doing, hope keep length my update prescribed by organizers Workshop.