Why do we need a graviton?
Most theorists believe that gravitons must exist, because quantum theory has successfully explained every other force of nature. Gravity is also by far the most feeble fundamental force in nature. This means that any graviton detector must be incredibly massive and placed near a powerful source of gravitons.
Is gravity quantized?
Background independent theories In 2+1 dimensions, however, gravity is a topological field theory, and it has been successfully quantized in several different ways, including spin networks.
What is gravity according to Albert Einstein?
It is here that Einstein connected the dots to suggest that gravity is the warping of space and time. Gravity is the curvature of the universe, caused by massive bodies, which determines the path that objects travel. That curvature is dynamical, moving as those objects move.
Is gravity actually curved space?
If gravity is actually curved space and if falling objects are simply following the natural curves of space why does each object have its own curve? This is a great question which goes to the heart of why Einstein said gravity is the curvature of space-time, rather than just the curvature of space.
Is gravity the warping of space and time?
The equivalence principle tells us that the effects of gravity and acceleration are indistinguishable. In thinking about the example of the cylindrical ride, we see that accelerated motion can warp space and time. It is here that Einstein connected the dots to suggest that gravity is the warping of space and time.
How does gravity affect the passage of time?
Gravity slows the passage of time. Similar to how the passage of time is changed under special relativity, general relativity predicts that massive objects will also dilate time. The more massive the object, the more noticeable the effect.