What could this Feynman diagram represent?
A Feynman diagram represents a perturbative contribution to the amplitude of a quantum transition from some initial quantum state to some final quantum state. For example, in the process of electron-positron annihilation the initial state is one electron and one positron, the final state: two photons.
Do photons interact with gravitons?
The answer to your question is by no means a solution to the “graviton mystery”, but assuming gravitons exist, yes, undoubtedly they interact with photons. The idea of gravitation (and by extension, quantum gravity) is that the tensor field of gravitation couples to all other fields universally and minimally.
Did Einstein predict gravitons?
There is no complete quantum field theory of gravitons due to an outstanding mathematical problem with renormalization in general relativity….Graviton.
| Composition | Elementary particle |
|---|---|
| Statistics | Bose–Einstein statistics |
| Family | Gauge boson |
| Interactions | Gravitation |
| Status | Hypothetical |
Is there an anti graviton?
An anti-graviton, if it existed, would have the identical properties of the graviton. No existing experiment has proved conclusively that these particles exist but improvements to current detectors such as VIRGO and LIGO should be up and running within a year or so.
What do gravitons interact with?
If gravitons exist, then, like photons and unlike gluons, gravitons do not interact with other particles of their kind. That is, gravitons carry the force of gravitation but are not affected by it.
What is the exchange particle for gravity?
Graviton. The graviton is the exchange particle for the gravity force. Although it has not been directly observed, a number of its properties can be implied from the nature of the force. Since gravity is an inverse square force of apparently infinite range, it can be implied that the rest mass of the graviton is zero.
Can gravitons be dark matter?
We consider the possibility that the massive graviton is a viable candidate of dark matter in the context of bimetric gravity. We first derive the energy-momentum tensor of the massive graviton and show that it indeed behaves as that of dark matter fluid.
How does graviton create gravity?
According to Einstein, matter distorts the very fabric of space and time around it, creating the effect of an attractive force field. But quantum theory describes all forces in terms of so-called ‘exchange particles’, flitting from place to place. In the case of gravity, those particles are known as ‘gravitons’.
Do black holes emit gravitons?
So if a black hole were losing energy somehow (perhaps by colliding with another black hole), then the gravity waves that would be given off would involve the graviton. But if you just had a black hole that was not losing energy, then the black hole would not be producing gravitational waves.
Why can gravitons escape black holes?
One of these is the restriction on travelling slower than the speed of light. So the virtual gravitons and photons speed away from the singularity faster than light until they’re beyond the event horizon, from whence they spread out into the universe to carry on their virtual business.