Question about the Graviton theory

In summary, in quantum field theory, the fundamental forces (electromagnetism, weak and strong nuclear forces) are mediated by particles called bosons. These particles act as "force carriers" between particles and are responsible for interactions between them. However, in the case of gravity, the force carrier particle, the graviton, does not require a receiving particle to mediate the force. This is different from the other forces, where a receiving particle is necessary. This suggests that gravity acts differently and can exert its influence on spacetime even without other matter present.
  • #1
Gerinski
323
15
In QFT, the other 3 fundamental forces (electromagnetism, weak and strong nuclear forces) are interpreted as being mediated by quanta of their particular field, what we call bosons or "force carrier particles".

These mediate the relevant force between particles. As I understand it, one completely isolated particle can not mediate the force. The force is an interaction between 2 particles. No "receiving particle" = no force to talk about.

With gravity, if we assume the same principle, it should mean that the graviton is the quantum of the gravitation field, the force carrier for gravity. But if we assume the same principle, it would seem that also, no receiving particle for the gravitons = no actual force to talk about.

And yet, we think about spacetime around a massive object being warped, no matter if its gravitation is "felt" by any other objects or not. We seem to assume that gravity is different to the other forces in that it does not need a "receiver" to become actual. Gravity exerts its influence in its surrounding spacetime, it warps spacetime around it, regardless if there is any other matter around to be influenced by its gravitational influence or not.

Do I get it right, and if so, what does it tell us about the difference between gravity and the other forces?
 
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  • #2
What do you mean with "receiving particle"? The graviton would couple to all particles with energy - and all particles have energy, including the gravitons itself.
There is no need for "receiving particles" in the same way the electric field around a charged particle exists even without other charged particles nearby.
 

What is the Graviton theory?

The Graviton theory is a theoretical concept in physics that suggests the existence of a subatomic particle called a graviton, which is believed to be responsible for the force of gravity.

What evidence supports the existence of gravitons?

Currently, there is no direct evidence for the existence of gravitons. However, the theory is supported by the fact that other fundamental forces in nature, such as electromagnetism, are mediated by particles (photons). Additionally, the theory is consistent with the principles of quantum mechanics and general relativity.

How does the Graviton theory explain gravity?

The Graviton theory proposes that gravitons are constantly exchanged between particles, creating a force of attraction between them. This force is what we experience as gravity. The theory also suggests that gravity is a fundamental force, just like the other three known forces in nature.

Is the Graviton theory widely accepted in the scientific community?

The Graviton theory is still a highly debated topic in the scientific community. While many physicists believe in the possibility of gravitons, there is currently no experimental evidence to support their existence. Therefore, the theory remains a theoretical concept and is not widely accepted as a proven scientific fact.

What are the potential implications of proving the existence of gravitons?

If the existence of gravitons is proven, it would have significant implications for our understanding of the universe and the laws of physics. It could also potentially lead to the development of new technologies and advancements in areas such as space exploration and quantum computing.

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