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arXiv · 2312.03507

Gravitational wave double copy of radiation from gluon shockwave collisions

Himanshu Raj·Raju Venugopalan
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Abstract

In a recent paper, we showed that the gravitational wave spectrum from trans-Planckian shockwave scattering in Einstein gravity is determined by the gravitational Lipatov vertex expressed as the bilinear double copy $\Gamma^{\mu\nu} = \frac12 C^\mu C^\nu - \frac12 N^\mu N^\nu$ where $C^\mu$ is the QCD Lipatov vertex and $N^\mu$ is the QED soft photon factor. We show here that this result can be directly obtained by careful application of the classical color-kinematic duality to the spectrum obtained in gluon shockwave collisions.

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Himanshu Raj, Raju Venugopalan. 2023-12-06. Gravitational wave double copy of radiation from gluon shockwave collisions. https://arxiv.org/abs/2312.03507

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