Ordinary Gravity Doesn't Entangle Particles ⚡ экспресс
In a recent paper by Aziz and Howl, it was argued that quantum particles could become entangled via gravitational interaction, even with a classical gravitational potential. However, it has been shown that the reported entanglement stems from discarding part of the transition amplitudes. A full account of all amplitudes leaves the initial factorized state intact, preventing any entanglement. The analysis demonstrates that neglecting contributions from certain trajectories leads to the false conclusion of entanglement generation. Therefore, in this scenario, classical gravity fails to produce quantum entanglement, casting doubt on interpretations that link gravity to quantum phenomena.
Gravity is like a stretched trampoline: massive bodies press into it, making other bodies roll toward them. This shared curvature of space—gravity—affects everyone, but it doesn't convey secret messages. For quantum entanglement to arise, an exchange of special particles is needed, as if the balls on the trampoline were tossing smaller balls back and forth to synchronize.
In the quantum world, such tricks work thanks to mediators, like particles of the Standard Model. Even gravitational waves—ripples from the motion of massive bodies—don't carry quantum instructions. A recent study claimed the opposite, but a new analysis found an error: they didn't account for all the dents in the trampoline—they overlooked small but crucial ones. It's like trying to assemble a puzzle without the corner pieces. But here's the striking bit: even if you place a mass as big as Everest on the trampoline, gravity won't entangle the particles. For that, the quantum nature of spacetime itself is required.
🎯 Gravity is so weak that even if you concentrated the mass of an entire mountain into one point, its quantum influence would remain ghostly. That's why hunters of quantum gravity dream of accelerators the size of the Solar System.