atyy said:Yes, gravitons and curved spacetime are compatible. A curved spacetime would be (approximately) a coherent state of gravitons on a flat spacetime.
Discussed within string theory on p108 of http://books.google.com/books?id=k4...e+of+strings+background&source=gbs_navlinks_s
atyy said:Yes, gravitons and curved spacetime are compatible. A curved spacetime would be (approximately) a coherent state of gravitons on a flat spacetime.
Discussed within string theory on p108 of http://books.google.com/books?id=k4...e+of+strings+background&source=gbs_navlinks_s
Gravitons are hypothetical particles that are believed to be the carrier of the gravitational force. They are predicted by theories that attempt to unify gravity with other fundamental forces. The curvature of spacetime, on the other hand, is a fundamental concept in Einstein's theory of general relativity, which explains how massive objects like planets and stars cause a bending or curvature of the fabric of spacetime.
In general relativity, the force of gravity is not a force in the traditional sense, but rather a manifestation of the curvature of spacetime caused by massive objects. Gravitons, on the other hand, are believed to mediate the interaction between massive objects and cause this curvature of spacetime. They are essentially the "particles" that carry the gravitational force.
No, they are not mutually exclusive. The concept of gravitons is still a theoretical concept and has not been proven, while the curvature of spacetime is a well-established concept in general relativity. It is possible that both explanations could be valid, with gravitons being the underlying mechanism for the curvature of spacetime.
At this point, the existence of gravitons has not been proven experimentally. While there is strong theoretical support for their existence, scientists are still working on ways to detect them directly. Some experiments, such as the Laser Interferometer Gravitational-Wave Observatory (LIGO), indirectly support the existence of gravitons by detecting gravitational waves, which are predicted by the theory of general relativity.
There is still ongoing debate and research among scientists on the nature of gravity and whether gravitons or the curvature of spacetime is the correct explanation. The majority of scientists currently accept the theory of general relativity and the concept of spacetime curvature, but there is also a significant effort to find evidence for the existence of gravitons and potentially reconcile the two explanations.