"The number of degrees of freedom in a spatial region is proportional to its surface area instead of its volume” - Daniel Harlow, Quantum gravity theorist at MIT.

According to physicists, quantum particles are responsible for three forces of nature:

Einstein's General Theory Of Relativity provides a rock-solid description of gravity, black holes and even the Big Bang, but fails to explain the very ‘singularities’ that signal towards infinity.

• While performing quantum calculations, certain infinite terms appear, making these theories ‘non-renormalizable’.
• Theories that are describing the forces of nature other than gravity, can easily be renormalized(put to scale) and that makes gravity an a...

Any proposed theory of quantum gravity would need to take care of the principles of locality, which state that any variable can change independently while measuring the properties of any point in space-time. These variables are called the degrees of freedom.

The ‘curves in space’ theory of gravity is falling out of favour due to the fact that Einstein’s equations seem to work on our solar system but begin to break when we apply the same near a black hole or back in time, during the initial big bang.

The infinite weirdness of black holes makes it difficult for a physicist to combine gravity with quantum mechanics (QM).

Quantum gravity experiments and observations show some interesting phenomena in particles and even space-time. It is the cause of the creation of entire universes, not just particles.