Testing quantum superpositions of the gravitational field with Bose-Einstein condensates
arXiv:gr-qc/0410030 · doi:10.1103/PhysRevA.71.024101
Abstract
We consider the gravity field of a Bose-Einstein condensate in a quantum superposition. The gravity field then is also in a quantum superposition which is in principle observable. Hence we have ``quantum gravity'' far away from the so-called Planck scale.