According to Einstein, gravity is the warping of space-time at macroscopic scales like those of galaxies, planets and everyday objects. But what are gravity and the geometry of space-time at the smallest scales?
According to this idea, space-time arises out of a series of interlinked nodes in a complex network. Entangled particles form the nodes at the deepest level of the network, and the nodes combine to form new nodes at higher levels.
If two quantum particles are entangled, measuring the state of one particle instantly reveals the state of the other. It is this entanglement, some physicists say, that binds the network together and gives rise to the structure of space-time.