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arXiv · 2402.14062

Carrollian Amplitudes from Strings

Stephan Stieberger·Tomasz R. Taylor·Bin Zhu
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Abstract

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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Stephan Stieberger, Tomasz R. Taylor, Bin Zhu. 2024-02-21. Carrollian Amplitudes from Strings. https://arxiv.org/abs/2402.14062

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