近日，美国石溪大学的Yu-Ping Wang及其研究团队取得一项新进展。经过不懈努力，他们揭示源于手性弦的天体全息。相关研究成果已于2024年6月26日在国际知名学术期刊《高能物理杂志》上发表。

本文研究了天体全息与手性弦的关系。手性弦与传统的弦理论的主要区别在于其弦传播子的边界条件有所变化。研究发现，手性弦能够精确再现引力子的振幅，因此被视为爱因斯坦引力的另一种理论表达。天体全息则揭示了渐近平坦时空中的引力与其共形边界上的共形场论（CFT）之间的二象性。鉴于两者均为引力的CFT描述，本文致力于研究这两种形式之间的潜在联系。

通过对手性弦的顶点算子的算符乘积展开（OPEs）进行详细分析，得出了能态软定理和共形软定理。CCFT（天体共形场论）中的所有算子都可以用Mellin变换手性弦理论中的顶点算子来描述，并且CCFT的OPE系数也可以由世界面描述得到。

附：英文原文

Title: Celestial holography from chiral strings

Author: Krishna, Hare, Wang, Yu-Ping

Issue&Volume: 2024-06-26

Abstract: In this paper, we studied the relationship between celestial holography and chiral strings. Chiral strings differ from the usual string theory by a change of boundary conditions on the string propagators. It is shown that chiral strings would reproduce graviton amplitudes and could serve as an alternative description of Einstein’s gravity. Celestial holography is a proposed duality between gravity in asymptotically flat space-time and a CFT living on its conformal boundary. Since both are CFT descriptions of gravity, we investigate the potential connection between these two formalisms.In this paper, we find that both the energetic as well as conformal soft theorems could be derived from the OPEs of vertex operators of chiral strings. All operators in the CCFT can be described by Mellin transforming the vertex operators in the chiral string theories, and the OPE coefficients of CCFT can also be obtained from the world-sheet description.

DOI: 10.1007/JHEP06(2024)178

Source: https://link.springer.com/article/10.1007/JHEP06(2024)178