BRST analysis of physical states in a two-dimensional black hole.

BRST analysis of physical states in a two-dimensional black hole.
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二维黑洞物理状态的 BRST 分析。

DOI:
10.1103/physrevd.48.3793
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发表时间:
1993
期刊:
Physical review. D, Particles and fields
影响因子:
--
通讯作者:
Sakaguchi
Sakaguchi
中科院分区:
--
文献类型:
--
作者:
Itoh;Kunitomo;Ohta;Sakaguchi

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我们研究 SL(2,[ital R])/U(1) 陪集模型的 BRST 上同调,该模型描述了精确的弦黑洞解。结果表明,物理谱不仅可以包含与 [ital c]=1 二维引力中的那些相对应的额外离散状态,而且还可以包含许多附加的新状态,其鬼数 [ital N][sub FP]=[minus]1 到 2。我们还讨论了非酉表示的特征以及我们的结果与其他方法的关系。
We study the BRST cohomology for an SL(2,[ital R])/U(1) coset model, which describes an exact string black hole solution. It is shown that the physical spectrum could contain not only the extra discrete states corresponding to those in [ital c]=1 two-dimensional gravity but also many additional new states with a ghost number [ital N][sub FP]=[minus]1 to 2. We also discuss characters for nonunitary representations and the relation of our results to other approaches.