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Through their mathematical framework, the physicists argue that these four new bosons can merge to create a composite particle that behaves as a spin-2 particle, a property expected of the graviton. Moreover, they assert that this framework can recover Einstein's equations of general relativity, despite being grounded in a flat-space premise.
The Concept of Teleparallel Gravity
One of the intriguing mechanisms at play in this new framework is known as teleparallel gravity, a concept Einstein himself explored in the 1920s. Traditionally, gravitation in Einstein's model is conveyed through the curvature of spacetime around massive objects; teleparallel gravity offers a novel perspective by suggesting that, instead of curving space, gravity introduces twists and torsions in flat space.