New quantum theory of gravity developed
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Researchers at Aalto University have developed a new quantum theory of gravity which describes gravity in a way that's compatible with the standard model of particle physics, opening the door to an improved understanding of how the universe began.
"If this turns out to lead to a complete quantum field theory of gravity, then eventually it will give answers to the very difficult problems of understanding singularities in black holes and the Big Bang," he says.
Although the theory is promising, the duo point out that they have not yet completed its proof. The theory uses a technical procedure known as renormalization, a mathematical way of dealing with infinities that show up in the calculations.
So far Partanen and Tulkki have shown that this works up to a certain point—for so-called 'first order' terms—but they need to make sure the infinities can be eliminated throughout the entire calculation.
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https://phys.org/news/2025-05-quantum-theory-gravity-sought-crucial.html
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