标题： 置换型轨道空间作为多重的$c=26$物理弦系统 III. $\hat{c}=52$弦的谱 显示英文标题

标题： The Orbifolds of Permutation-Type as Physical String Systems at Multiples of $c=26$ III. The Spectra of $\hat{c}=52$ Strings

摘要： 在本系列的第二篇论文中，我得到了所有扭曲开弦和闭弦$\hat{c} = 52$的扭曲BRST系统和扩展的物理态条件。 在本文中，我补充了所有$\hat{c} = 52$弦的扩展（扭曲）Virasoro生成元的显式形式，这使我们能够讨论这些系统的物理谱。 令人惊讶的是，所有$\hat{c}=52$谱在$c=26$处都可以用一般非常规的Virasoro生成元进行等价描述。 这种描述强有力地支持了我们之前的猜想，即$\hat{c}=52$弦不存在负范数态，并且进一步表明一些较简单情况的谱与普通未扭曲开弦和闭弦$c=26$的谱是等价的。 显示英文摘要

摘要： In the second paper of this series, I obtained the twisted BRST systems and extended physical-state conditions of all twisted open and closed $\hat{c} = 52$ strings. In this paper, I supplement the extended physical-state conditions with the explicit form of the extended (twisted) Virasoro generators of all $\hat{c} = 52$ strings, which allows us to discuss the physical spectra of these systems. Surprisingly, all the $\hat{c}=52$ spectra admit an equivalent description in terms of generically-unconventional Virasoro generators at $c=26$. This description strongly supports our prior conjecture that the $\hat{c}=52$ strings are free of negative-norm states, and moreover shows that the spectra of some of the simpler cases are equivalent to those of ordinary untwisted open and closed $c=26$ strings.