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arXiv 2402.14062hep-thgr-qc
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来自弦论的卡罗尔振幅

Carrollian Amplitudes from Strings

Stephan Stieberger, Tomasz R. Taylor, Bin Zhu

AI总结:

本文将超弦散射振幅变换为卡罗尔共形场论的关联函数,构造出紫外和红外均有限的后裔场塔,并研究了I型开弦与杂化闭弦中规范玻色子和引力子的四点振幅及无穷推迟时间极限。

摘要:

卡罗尔全息旨在通过生活在零无穷远处的三维卡罗尔共形场论来描述四维渐近平坦时空中的引力。我们将超弦散射振幅变换为卡罗尔共形场论初级场的关联函数,这些关联函数依赖于天球的三维坐标和一个推迟时间坐标。弦张力倒数的幂级数被转换为底层场论卡罗尔振幅的整个塔,其中既包含紫外有限也包含红外有限的后裔场。我们重点研究I型开超弦理论和闭杂化超弦理论在树级上涉及规范玻色子和引力子的四点振幅。我们还讨论了推迟时间坐标趋于无穷大的极限,此时弦世界面变为天球面。

英文摘要:

Carrollian holography is supposed to describe gravity in four-dimensional asymptotically flat space-time by the three-dimensional Carrollian CFT living at null infinity. We transform superstring scattering amplitudes into the correlation functions of primary fields of Carrollian CFT depending on the three-dimensional coordinates of the celestial sphere and a retarded time coordinate. The power series in the inverse string tension is converted to a whole tower of both UV and IR finite descendants of the underlying field-theoretical Carrollian amplitude. We focus on four-point amplitudes involving gauge bosons and gravitons in type I open superstring theory and in closed heterotic superstring theory at the tree-level. We also discuss the limit of infinite retarded time coordinates, where the string world-sheet becomes celestial.

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