我经历过弦论的两次“革命”。第一次发生在上世纪80年代中期,那时我刚开始读研究生,初步打算研究一种叫超引力的理论,它是把爱因斯坦的引力理论和一种叫超对称的东西结合起来的理论。很奇怪,超对称是70年代首先在弦论中出现的,但人们并没有重视,直到后来人们发现超对称理论的量子性质非常好,才越来越重视它。到了超引力时代,研究者们普遍倾向于认 I've experienced two “revolutions” of string theory. The first occurred in the mid-1980s when I first started studying for a graduate student and initially attempted to study a theory called supergravity that combined Einstein's gravitational theory with something called super-symmetry theory. Strangely enough, supersymmetry emerged in the string theory first in the 1970s, but people did not pay much attention until it was discovered that the quantum nature of the supersymmetry theory was so great that it became more and more important. In the era of super-gravitation, researchers generally tend to recognize