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arXiv 2106.05643hep-th
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二维拓扑引力中回路方程的一个证明

A proof of loop equations in 2d topological gravity

Kazumi Okuyama, Kazuhiro Sakai

摘要:

研究了二维Witten-Kontsevich拓扑引力中的多边界算子。我们提出了一个证明的回路方程服从的放大器。虽然回路方程是很久以前推导出来的,但我们的证明在一般耦合$t_k$存在的情况下是完全明确的。我们澄清所有的细节,特别是处理属零的一个边界相关的一部分。通过几个新的例子验证了回路方程,包括Jackiw-Teitelboim引力在亏格展开下的近似解和Airy情形下的精确近似解.我们还讨论了自由玻色子/费米子表示的量子化,并将其与Marolf和Maxfield的公式以及Ishibashi和Kawai的弦场论进行了比较。我们发现了相似之处,但也有一些不同之处。

英文摘要:

We study multi-boundary correlators in 2d Witten-Kontsevich topological gravity. We present a proof of the loop equations obeyed by the correlators. While the loop equations were derived a long time ago, our proof is fully explicit in the presence of general couplings $t_k$. We clarify all the details, in particular the treatment of the genus zero part of the one-boundary correlator. The loop equations are verified by several new examples, including the correlators of Jackiw-Teitelboim gravity in the genus expansion and the exact correlators in the Airy case. We also discuss the free boson/fermion representation of the correlators and compare it with the formulation of Marolf and Maxfield and the string field theory of Ishibashi and Kawai. We find similarities but also some differences.

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。

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