Currently, the connection between Quantum Mechanics and Gravity is not fully understood. While both theories are successful in their respective domains, they are fundamentally different and have not yet been unified into a single framework.
Yes, there are several proposed theories and models, such as string theory, loop quantum gravity, and the holographic principle, that attempt to unify Quantum Mechanics and Gravity. However, these theories are still in the early stages of development and have not been experimentally verified.
Quantum Mechanics and Gravity are based on different principles and operate on different scales. Quantum Mechanics describes the behavior of particles on a small scale, while Gravity explains the behavior of large objects by the curvature of space-time caused by massive objects.
The concept of "spooky action at a distance" in Quantum Mechanics, also known as quantum entanglement, has not been directly linked to Gravity. However, some theories propose that the phenomenon of entanglement may play a role in the unification of Quantum Mechanics and Gravity.
Yes, there are ongoing experiments and observations that aim to test the connection between Quantum Mechanics and Gravity. These include tests of quantum gravity, gravitational wave observations, and experiments at the Large Hadron Collider.