S*********g
发帖数: 5298 | 1 Goldstone boson 是自发对称破缺之后产生的那个零质量BOSON
我学到的MODULI是在STRING THEORY里,
那里的MODULI是用来实现对度规空间的积分的.
实际上等价于GHOST.是由度规的简并引起的. | S*********g
发帖数: 5298 | 2 实际上作为一个EFFECTIVE的场论,只有在考虑了GHOST之后,
实际场的路径积分才是那种通常所用的简单形式,
所以,个人认为,从这个角度来看,实际上GHOST的作用其实是真实场作用的体现.
做个类比,就相当于ELECTRON-HOLE之间的关系. | a***o
发帖数: 1 | 3 Any quotient space resulted from an origianl space devided
by some equivalence relation can be called a moduli space.
Therefore the concept is widely used in algebraic geometry,
bundles, categories,....wherever such structure appears.
Cases of real interests for stringists are gauged linear
sigma models. Locally around any smooth point, they are well
approximated by cohomology rings, where the ring structure
(dictated by the multiplication!) provides a good deal of
information about the curvatu
【在 S*********g 的大作中提到】
: 实际上作为一个EFFECTIVE的场论,只有在考虑了GHOST之后,
: 实际场的路径积分才是那种通常所用的简单形式,
: 所以,个人认为,从这个角度来看,实际上GHOST的作用其实是真实场作用的体现.
: 做个类比,就相当于ELECTRON-HOLE之间的关系.
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