Testing the Uniqueness of the Open Bosonic String Field Theory Vacuum
Testing the Uniqueness of the Open Bosonic String Field Theory Vacuum
复制标题
测试开放玻色弦场论真空的独特性
DOI：
--
复制
发表时间：
2001
期刊：
影响因子：
--
通讯作者：
Nicolas Moeller
中科院分区：
文献类型：
--
作者：
Bo Feng;Yang;Nicolas Moeller
算符K_n是Witten三次开弦理论的再参数对称性的生成元。一个相关的问题是，它们是否可以被用来产生快子真空的变形，从而破坏它的独特性。我们用能级截断证明了真空上的这些变换实际上是非常高精度的纯规范变换，从而为微扰稳定真空的唯一性提供了新的证据。等价地，这一结果意味着BRST算子的一些离散上同调类在稳定真空中消失。
The operators K_n are generators of reparameterization symmetries of Witten's cubic open string field theory. One pertinent question is whether they can be utilised to generate deformations of the tachyon vacuum and thereby violate its uniqueness. We use level truncation to show that these transformations on the vacuum are in fact pure gauge transformations to a very high accuracy, thus giving new evidence for the uniqueness of the perturbatively stable vacuum. Equivalently, this result implies the vanishing of some discrete cohomology classes of the BRST operator in the stable vacuum.