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arXiv · 2201.08700

Constraining the topological Gauss-Bonnet coupling from GW150914

Kabir Chakravarti·Rajes Ghosh·Sudipta Sarkar
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Abstract

Recent gravitational wave observation based on the data from GW150914 has confirmed Hawking's area theorem and estimated the increase in total horizon area during a merger process of two Kerr black holes. We use this result and the validity of the second law to obtain the first observational bound on the 4D topological Gauss-Bonnet coupling as $\gamma \lesssim 2.804^{+7.946}_{-1.169} \times 10^{9}\, m^2$ with $95 \%$ credibility.

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Kabir Chakravarti, Rajes Ghosh, Sudipta Sarkar. 2022-01-21. Constraining the topological Gauss-Bonnet coupling from GW150914. https://doi.org/10.1103/physrevd.106.l041503

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