Exploring Quantum Gravity: Physicists Tune In to the Cosmic Ring of Black Holes — New methods will allow for |
and KAGRA, joined the hunt in 2017 and 2020, respectively). So far, however, the general theory of relativity has passed test after test with no signs of breaking down., describe new methods for putting general relativity to even more stringent tests. By looking more closely at the structures of black holes, and the ripples in space-time they produce, the scientists are seeking signs of small deviations from general relativity that would hint at the presence of quantum gravity.
“If one wants to solve all the Einstein equations of a black hole merger to accurately simulate it, they must turn to supercomputers,” Li says. “Numerical relativity methods are incredibly important for accurately simulating black hole mergers, and they provide a crucial foundation for interpreting LIGO data. But it is extremely hard for physicists to draw intuitions directly from the numerical results. The Teukolsky equation gives us an intuitive look at what is going on in the ringdown phase.
“We can look for features described by Dongjun’s equation in the data that LIGO, Virgo, and KAGRA will collect,” Ma says. “Dongjun has found a way to translate a large set of complex equations into just one equation, and this is tremendously helpful. This equation is more efficient and easier to use than methods we used before.”
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