proof of gravitons?

[ydoaPs]

it occurs to me that since gravitons are particles, they must also act like a wave. with that in mind, shouldn't there be an interference pattern?

 

isn't that an easy way to proof the existance of gravitons? if there is an interference pattern, they exist, if not, then they don't.

 

there must be something wrong with this or it would have already been done. whats up?

[timo]

To detect the interference pattern of gravitons you must be able to detect gravitons. If you can detect gravitons you´ve allready proven them. For large ammounts of gravitons you´d also need them to be coherent. I don´t think anyone would know how to construct a "gravitaional laser".

[ydoaPs]

you wouldn't need to detect them, you would just need to detect their infulence(gravity) which we can do. if gravitons exist, there should be a predictable gravatational flux, shouldn't there?

[timo]

That´s why I added the 2nd sentence to my answer: You must have a large ammount of coherent gravitons. Probably a really really large ammount if you want to do measurements with say pendulums or lasers.

Afaik, not even normal (the non-quantized ones of General Relativity) gravitational waves have been detected so far (but there are several currently running or upcoming experiments trying to do so).

[ydoaPs]

why would they have to be coherant? wouldn't that mess with the interference pattern?

[timo]

Not sure if I completely understand that question plus it´s quite some time since I did interference experiments but if I remember correctly some coherence is a nessecity for an interference pattern. Another interesting question would of course be how you want to create an interference pattern with gravitons.

[ydoaPs]

a massive object emits gravitons which interfere with other gravitons greating areas of strong/weak gravitational force as compared to the inverse-square law. shouldn't that difference be predictable and measurable?

[timo]

To me it sounds like trying to get an interference pattern of two suns´ photons.

[ydoaPs]

one source, several gravitons. caclulate the pattern of interference, then measure in several places.

[J.C.MacSwell]

it occurs to me that since gravitons are particles' date=' they must also act like a wave. with that in mind, shouldn't there be an interference pattern?

 

isn't that an easy way to proof the existance of gravitons? if there is an interference pattern, they exist, if not, then they don't.

 

there must be something wrong with this or it would have already been done. whats up?[/quote']

 

We need an experiment/set-up.

I think a good test would be a 2 slit experiment.

How do you set-up the "opaque to gravity" wall? (the two slits allowing the normal graviton flow or communication which initiates the interference)

[ydoaPs]

that may be the answer to my question right.

[CPL.Luke]

isn't it true that there's nothing that can shield gravity thus a two slit experiment could not be carried out. furthermore how would you detect where the gravitons are hitting (in order to see the iterference pattern)

[ydoaPs]

you wouldn't need to detect the particles, just gravity. gravity isn't understood enough to know if it is possible to be shielded.

[Klaynos]

you wouldn't need to detect the particles, just gravity. gravity isn't understood enough to know if it is possible to be shielded.

 

And as we don't know how to shield them (if it is even possible), we can't do this experiment.

[ydoaPs]

i remember a problem in fizzicks class in which there were two speakers and we had to calculate where they canceled each other out. could the same principle apply here?

[Daecon]

What about binary star systems?

[BlackHole]

If gravity has something to do with vacuum energy, then i don't think it can be shielded.

[Nevermore]

cern has detected gravitons in a particle accelerater

[swansont]

cern has detected gravitons in a particle accelerater

 

Cite, please.

[ydoaPs]

Cite, please.

my thoughts exactly.

[BlackHole]

AFAIK gravitons have never been confirmed to exist.

[Klaynos]

That is also my knowledge.

 

And the speaker idea using stars instead, we'd have to get probes out to starts to search where we calculate the interfearence patterns should be, and also forgive me if my memory serves me incorectly but don't the sources have to be coherent?

[ydoaPs]

what about the two replacing two speakers with say two black holes and doin gthe interfernce that way?

 

you don't neccesarily have to send a probe you can use a telescope.

[CPL.Luke]

or just put probes between the earth and moon, there are places where the gravity of the earth and the moon cancel eachother out but that is simple classical mechanics

[ydoaPs]

lagrange points?