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arXiv · 1911.12775

Kerr-Newman stress-tensor from minimal coupling

Ming-Zhi Chung·Yu-tin Huang·Jung-Wook Kim
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Abstract

In this paper, we demonstrate that at leading order in post Minkowskian (PM) expansion, the stress-energy tensor of Kerr-Newman can be recovered to all orders in spin from three sets of minimal coupling: the electric and gravitational minimal coupling for higher-spin particles, and the "minimal coupling" for massive spin-2 decay. These couplings are uniquely defined from kinematic consideration alone. This is shown by extracting the classical piece of the one-loop stress-energy tensor form factor, which we provide a basis that is valid to all orders in spin. The 1 PM stress tensor, and the metric in the harmonic gauge, is then recovered from the classical spin limit of the form factor.

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Ming-Zhi Chung, Yu-tin Huang, Jung-Wook Kim. 2019-11-28. Kerr-Newman stress-tensor from minimal coupling. https://doi.org/10.1007/jhep12(2020)103

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