标题： 强耦合异质弦理论的现象学 显示英文标题

标题： Phenomenology of Strongly Coupled Heterotic String Theory

摘要： 这是在韩国首尔举行的亚太理论物理中心 inaugural 大会上的讲话文本，时间是 1996 年 6 月 9 日。 如果自然界可以用弦理论来描述，并且如果紧致化半径较大（如耦合统一所建议的），那么该理论处于由$M$-理论的低能极限最好描述的区域。 我们讨论了这种观点的一些现象学方面。 传统量子场论失效的尺度大约是统一尺度，因此（近似的）离散对称性对于防止质子衰变至关重要。 存在一个或多个轻轴子，其中一个解决了强 CP 问题。 模形式宇宙学仍然存在问题，但比微扰弦真空复杂得多。 显示英文摘要

摘要： This is the text of a talk given at the Inaugural Conference of the Asia Pacific Center for Theoretical Physics, Seoul, Korea, June 9, 1996. If nature is described by string theory, and if the compactification radius is large (as suggested by the unification of couplings), then the theory is in a regime best described by the low energy limit of $M$-theory. We discuss some phenomenological aspects of this view. The scale at which conventional quantum field theory breaks down is of order the unification scale and consequently (approximate) discrete symmetries are essential to prevent proton decay. There are one or more light axions, one of which solves the strong CP problem. Modular cosmology is still problematic but much more complex than in perturbative string vacua.