三个人的故事无张力弦和真空结构
A Tale of Three. Tensionless strings and vacuum structure
摘要：
在正则量子化的前提下，我们重新考察了玻色无张力弦论的量子结构。在经典理论中，世界片度规退化，Bondi-Metnzer-Sachs（BMS）代数作为确定共形规范的无张力等价的剩余对称而产生。在量子体系中，我们发现，通过仔细研究，有多种方式可以施加约束来限制物理希尔伯特空间，这反过来又导致了三种不同的无张力真空选择。我们详细地分析了这些真空，评论了各个方面，如中心荷和它们周围的光谱。
英文摘要：
Within the premise of canonical quantisation, we re-examine the quantum structure of bosonic tensionless string theory. In the classical theory, the worldsheet metric degenerates and the Bondi-Metnzer-Sachs (BMS) algebra arises as the residual symmetries on fixing the tensionless equivalent of the conformal gauge. In the quantum regime, we find, on careful examination, that there are multiple ways to impose constraints to restrict the physical Hilbert space, which in turn lead to three distinct choices of tensionless vacua. We analyse these vacua in detail, commenting on various aspects like the central charges and the spectrum around each of them.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
