In 2015, the LIGO/Virgo experiment, a large-scale research effort based at two observatories in the United States, led to the first direct observation of gravitational waves. This important milestone has since prompted physicists worldwide to devise new theoretical descriptions for the dynamics of blackholes, building on the data collected by the LIGO/Virgo collaboration.
“We pursued a connection between rotating Kerr black holes and massive higher-spin particles,” Henrik Johansson, co-author of the paper, told Phys.org. “In other words, we modeled the black hole as a spinning fundamental particle, similar to how the electron is treated in quantum electrodynamics.”
The connection between Kerr black holes and higher-spin theory was first explored in two distinct papers published in 2019. The first of these studies was carried out by Alfredo Guevara at the Perimeter Institute for Theoretical Physics and his collaborators in Europe, while the second by Ming-Zhi Chung at National Taiwan University and his colleagues at Seoul National University.
Both of these previous works showed that the well-known Kerr metric can be matched to an infinite family of higher-spin scattering amplitudes. These amplitudes were first obtained by physicists Nima Arkani-Hamed, Tzu-Chen Huang and Yu-tin Huang, as part of a previous study.
“While these previous results are remarkable, they are not yet sufficient to accurately describe Kerr black-hole dynamics in view of upcoming experiments, such as the Einstein telescope, LISA and the Cosmic Explorer,” Johansson said. ”Some important missing information is contained within the black-hole Compton scattering amplitude, which is currently unknown for general spin.”
2023-12-28 00:00:04
Article from phys.org rnrn