Do Gravitons Attract Other Gravitons?

  • Context: Graduate 
  • Thread starter Thread starter mjacobsca
  • Start date Start date
  • Tags Tags
    Gravitons
Click For Summary

Discussion Overview

The discussion revolves around the nature of gravitons, specifically whether they attract other gravitons and how they behave in the context of singularities and event horizons. The scope includes theoretical considerations of gravity, particle interactions, and implications of general relativity.

Discussion Character

  • Debate/contested
  • Conceptual clarification
  • Exploratory

Main Points Raised

  • Some participants propose that gravitons do attract other gravitons, likening the question to whether gravity itself gravitates.
  • Others argue that a gravitating object does not emit gravitons, drawing a parallel to charged objects not emitting photons.
  • One participant mentions that gravity is self-interacting, complicating its formulation through Einstein's tensor.
  • There is a suggestion that gravity exists before an event horizon forms, with only random radiation leaking out due to virtual particle formation near the horizon.
  • A question is raised about whether the gravitational field is "frozen" once formed, considering the variability of gravitational fields, such as that of Jupiter, and the nature of virtual gravitons existing momentarily.

Areas of Agreement / Disagreement

Participants express differing views on whether gravitons can attract each other and the nature of graviton emission from singularities, indicating that multiple competing views remain without consensus.

Contextual Notes

There are unresolved assumptions regarding the behavior of gravitons in strong gravitational fields and the implications of virtual particles in the context of event horizons.

mjacobsca
Messages
96
Reaction score
0
As the title suggests, I'm wondering if gravitons feel the pull of other gravitons. And secondly, if a singularity emits gravitons, how do the gravitons get out of the event horizon to pull in other matter?
 
Physics news on Phys.org
Yes they do. The question is equivalent to asking whether gravity gravitates and the answer is yes.

Sometimes we ignore this effect (b/c if itself interaction its going to be loop supressed and small in a flat background) but it has to be there in the full picture and this sort of physics does become important at some scale..
 
mjacobsca said:
And secondly, if a singularity emits gravitons

It doesn't. A gravitating object does not emit gravitons, just as a charged object doesn't glow (emit photons).
 
the fact that gravity IS self interacting made it's formulation difficult,,,via Einstein's tensor.


And secondly, if a singularity emits gravitons, how do the gravitons get out of the event horizon to pull in other matter?

Gravity is present before the event horizon forms. Once the star, for example, collapses beyond the critical circumference where the event horizon forms, only random radiation leaks out...via virtual particle formation just outside the horizon...
 
Gravity is present before the event horizon forms. Once the star, for example, collapses beyond the critical circumference where the event horizon forms, only random radiation leaks out...via virtual particle formation just outside the horizon

Does this imply that the gravitational field once formed is frozen? What about the evidence that Jupiter's field changes with its motion and moves at the speed of light? What about the possibility that gravitons are virtual and exist for only an instant?
 

Similar threads

  • · Replies 31 ·
2
Replies
31
Views
7K
  • · Replies 4 ·
Replies
4
Views
2K
  • · Replies 100 ·
4
Replies
100
Views
10K
  • · Replies 5 ·
Replies
5
Views
2K
Replies
2
Views
3K
  • · Replies 6 ·
Replies
6
Views
3K
  • · Replies 5 ·
Replies
5
Views
3K
  • · Replies 1 ·
Replies
1
Views
671
  • · Replies 8 ·
Replies
8
Views
2K
  • · Replies 1 ·
Replies
1
Views
2K