Research on electronic systems in condensed matter physics is at present developing very rapidly, where the main focus is changing from the "single-particle problem" to the "many-particle problem". That is, the main research interest changed from phenomena that can be understood in the single particle picture, as, for example, in band theory, to phenomena that arise owing to the interaction between many electrons.
“冷聚变”是一个颇为敏感且备受质疑的话题,也是当前科技界应当面对的重大问题之一。2008年4月8~9日,中国科协学会学术部以“‘冷聚变’的争论”为题在北京召开了第l7期新观点新学说学术沙龙,邀请了许多专家学者就此问题进行自由讨论。会议就氢、氘气体放电实验出现的许多奇异现象(如异常x射线谱线、超热、新核素生成等)和其理论解释(如“小氢原子模型”、“P.e—P等束缚态模型”),以及其他的实验现象和理论解释进行了报告、质疑和热烈的争论。读者可以从本书中了解到当前国内“冷聚变”研究的状况和各位专家学者的基本观点。这里需要说明的是,许多现象和研究早已不属于“冷聚变”范畴,而是在一些实验中出现了我们无法用现有理论解释的现象,“冷聚变”仅仅是一种借用和象征性说法。这个问题之所以重要,是因为这许多现象如