Gravitons vs Relativity: Einstein or Particle Exchange?

In summary, the conversation discusses the relationship between gravitons and Einstein's general relativity. It is suggested that the idea of a particle exchange, specifically gravitons, may contradict the concept of space-time fabric. However, it is noted that Einstein's equations can be derived from the hypothesis of a massless spin-2 exchange. The exact definition of a graviton and its relationship to fermions is still unknown. Some propose using the vierbein, which is related to the graviton field, as a more direct approach.
  • #1
QUANTUMQ
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does the idea of how gravity works through gravitons contradict einsteins general relativity?
the idea of a particle exchange (gravitons) does don't seem to agree with space-time fabric.
can they agree or is only one right? if so which do you think?
 
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  • #2
I can tell you that you can find Einstein's equations starting from the hypothesis of a massless spin-2 exchange. But I agree that, apart from being spin-2, we don't know much how the graviton should be defined. The obvious idea is [tex]g=\eta+h[/tex] where [tex]g[/tex] is the metric, [tex]\eta[/tex] is the metric of the vacuum, and [tex]h[/tex] is your graviton field. This idea does not allow you to couple fermions to the graviton. Sometimes we take the vierbein, which is "roughly speaking" the square root of the metric, to be related more directly to the graviton field.
 
  • #3


I would like to clarify that the concept of gravitons is a theoretical idea proposed by quantum physicists, while Einstein's theory of general relativity is a well-established theory that has been extensively tested and confirmed through observations and experiments.

The idea of gravitons as the particles responsible for the force of gravity is still a topic of debate and has not been proven conclusively. On the other hand, general relativity provides a comprehensive understanding of gravity as the curvature of space-time caused by the presence of matter and energy.

The concept of gravitons as the carriers of the force of gravity may seem to contradict general relativity, but it is important to note that these are two different theories attempting to explain the same phenomenon. It is possible that they can coexist and complement each other in understanding the complexities of gravity.

However, as of now, general relativity remains the more widely accepted and supported theory among the scientific community. It has successfully explained and predicted numerous gravitational phenomena, including the bending of light, gravitational time dilation, and the existence of black holes.

In conclusion, while the idea of gravitons and general relativity may seem to contradict each other, it is essential to keep an open mind and continue research to fully understand the nature of gravity. Both theories have their merits and limitations, and it is possible that a future theory may reconcile them. I believe in following the evidence and accepting the most supported and tested theory, which in this case is general relativity.
 

FAQ: Gravitons vs Relativity: Einstein or Particle Exchange?

1. What is the difference between gravitons and relativity?

Gravitons are hypothetical particles that are believed to be the carriers of the gravitational force, while relativity is a theory that explains the relationship between matter, energy, and the curvature of space-time.

2. Which theory is more widely accepted, Einstein's theory of relativity or the concept of gravitons?

Einstein's theory of relativity is more widely accepted and has been extensively tested and validated through various experiments and observations. The concept of gravitons is still a subject of ongoing research and debate.

3. Can both gravitons and relativity coexist in the same theory?

It is currently not possible to incorporate both gravitons and relativity into a single unified theory. This is because they have different conceptual frameworks and mathematical descriptions.

4. How do gravitons and relativity explain the phenomenon of gravity?

Gravitons explain gravity as a force between particles, while relativity explains gravity as the curvature of space-time caused by the presence of matter and energy.

5. Are there any experiments that have been conducted to test the existence of gravitons?

While there have been attempts to detect gravitons indirectly through various experiments, there is currently no direct experimental evidence for their existence. More research and advanced technologies are needed to further investigate the existence of gravitons.

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