Gravitons Definition and 173 Threads

Gravitons are still theoretical, of course, but I'm not quite sure how they're supposed to fit into the current picture. If gravity is, in basic terms, caused by the curvature of spacetime around objects with mass, then what role would the theoretical graviton be playing? What comes first, the...

Hello, I am about as far from a physicist as physically possible, but I am fascinated by the theory, so I've re-enrolled in some intro physics classes next semester. (I'm a Poli Sci/Pre-Law Undergrad). I've been reading a bit about the subject for some time now, and I'm a little confused...

I'm a sci-fi writer and would like some help, if you would please. My story is simple: monopoles arising in spin-ice can be charged with enough magnetricity to deflect spin 2 gravitons, freeing manking from the tyranny of a lone world, and propelling us into a vast new tyranny. I heard...

Can someone explain the rationale behind gravitons to me? My background is computational physics, and as such i may be biased towards physics that is actually computable, such as LQG and regge calc. I have some clue what this is all about, but i have some questions: Is there any reason...

i`m having trouble reconciling gravitons and the warping of space. Do the gravitons enter and leave the extra dimensions causing a fluctuation of the extra dimensions entering and leaving our visible dimensions?

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?

If they are real, what exactly do gravitons do? I mean are they absorbed by other particles resulting in an attraction like photons and warp space-time in the process or do they just warp space-time which causes the attraction? If it's the latter how do the gravitons get "used up?"

An interesting property of the Unruh effect is that the very existence of particles depends on a frame. Unruh particles exist in the accelerating frame but not in an inertial frame. I think exactly the same is applicable to the gravitons for obvious reasons. So inertial pseudo-forces can be...

The only thing i think i know about gravity is it is an attractive pseudo force, so when one imagines gravity as gravitons, why do they not clump together and cause gravity anomalies (gravity with no mass)?

If gravitons exist, how can black holes emit them? It cannot be like Hawking radiation, which increases as the black hole gets smaller. The gravitational field grows larger as black holes grow larger. Also, would not the energy of the graviton decrease to zero (and its wavelength increase to...

Is it possible to define gravitons corresponding to flat spacetime? If so, how? Flat spacetme has zero curvature. How does one mathematically describe gravitons for flat spacetime?

If quantum gravity exists, then gravitons are responsible; however, it seems to me as if a body of matter would need to be consuming energy/mass (as the sun does) to create gravitons, because of the Conservation Theory. Have I overlooked something? Almost certainly, but I cannot find it. Any...

I can picture gravity as the warping of spacetime as postulated by GR but I have not heard a descriptive explanation of how a graviton might cause an attraction between two masses, or even if it is a cause in quantum theory. So okay, you have a closed string or a massless particle with a spin of...

howya - for those who hold to a theory of gravitons being the operative mechanism of gravity (as opposed to GR), i have a small question: since light is affected by gravity, particularly as it passes a very massive body and curves around it, and graviton theory would indicate that a near...

Assume we all accept that gravitational influence moves at the speed of light, just as EM radiation does. Light cannot escape from a black hole because the escape velocity from a BH exceeds the speed of light. If gravitons are a proposed particle-interaction based solution to explain gravity...

"phasing" ? gravitons hey everyone, I am new here and I am wondering if anyone knows whether or not someone already came up with the idea i had a year or two ago, or perhaps if someone knows its impossible and doesn't work. - after reading somewhere that its theorized that gravitons can "phase"...

According to particle physics, there is a certain particle called a graviton which is the messenger particle of gravity but it so happens that Einstein's theory of general relativity says that mass affects the space time fabric which is responsible for gravitational force. So it is like the...

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?

*Please read the thread before you vote in the poll! Disclaimer: I am not advocating a fraudulent theory, I am presenting original evidence and logic (detailing the contradictions in quantized gravity) both of which are certainly open for debate. Gravitation In classical mechanics, the...

Hello all. I have a quick question regarding gravity and I was wondering if someone could explain it to me in laymans terms, since I do not possesses the mathematical background to understand higher physics. According to Einstein, if gravity is simply the "fabric" of spacetime -- akin to a...

my project is about the search for the graviton, i know we are using particle accelerators to try to find out about them however we cannot detect them still, but we can prove they exist, i am having trouble explaining what is actually being done to detect them in any kind of detail. and the...

Can anyone tell me what is wrong with the follow observation (if anything)? (1) The graviton (putatively) mediates the force of gravity. The phenomenology of masses moving toward each other is due to an exchange of gravitons. Call these gravitons G1. (2) The G1 are themselves, as massless...

I just read this: http://www.americanchronicle.com/articles/50304 I'm just wondering what those who are more knowledgeable about this stuff think of it. My guess is the arguments are invalid otherwise people wouldn't bother studying string theory... Do gravitons interact with...

Or is there some way that they co-exist?

Where does the energy come from that produces gravitons? I understand it has to do with quantum field theory but that is all i know.

Lisa Randall said "string theory reproduces GR in 10 dimensions" Does string theory gravitons have 4D GR as its low energy limit? I know that its lowest mode vibrations corresponds to a massless spin-2 particle, the graviton. I know GR in 4D can be extended with susy. Does it reproduce...

Hey, I've been a little confused on the concept of gravitons. I know that they are the messenger particle of the gravitational force, but I thought that gravity was a result of the warping of the fabric of spacetime. If a large star warps spacetime, therefore attracting things around it, then...

Let me start by saying I know nothing and just come seeking knowledge. I hear that a graviton has never been discovered, only theorized. True? If so, I was thinking of how we might find one. When planets get nailed by asteroids isn't the energy from the momentum of the asteroid getting...

gravity is made of gravitons ?? the question is is gravity made of 'gravitons' i mean a particle adquire mass and gravity since it 'absorbs' a graviton.. and space time is Euclidean until it is surrounded by gravitons, then why could not construct a kind of field to polarize or avoid gravitons...

are there any introductory books on the theory behind gravitons and extra dimensions and also the experimental tests that could be done?

I'm an engineer, not a physicist, so you'll forgive my pre-uni knowledge of all things physics. I was discussing electromagnetic fields with someone, we got into it, photons being messenger particles, then onto gravitation and gravitons and so on. I got slightly confused by a few things...

Is it possible to create gravitons the way photons are created, with electrons falling from quantized systems, or create graviton analogies to photon-lasers?

Is it possible that gravitons also orbit nucleons like electrons do? I know this is speculative grounds, but are there any scientific principles that come to mind that could fallsify this question?

i have a question about gravitons and spacetime-curvature theories of gravity, are gravitons supposed to curve spacetime, or do gravitons dispense with the idea of spacetime curvature, and travel through flat minkowski spacetime, much as photons do? what would be the difference...

It is my understanding that gravitons are the elementary particles thought to transmist gravity. They must be massless and therefore travel at the speed of light. With this in mind, how can black holes gravitationally effect other bodies as the gravitons emitted by the black hole would not be...

1.From the I see gravity is the only force that requires no energy. Because when I fall gravity is pulling me down. This is between the Earth and me. Yet neither of us give any energy. I actually lose energy while I accelerate due to air. Yet I still gain energy. Why? Were does this energy...

Why does gravity need gravitons? Gravity is the curvature in spacetime and it is itself required to create a gravitational field. Does it mean that a body creates gravitons around the spacetime which is curved? Or does it mean that the spacetime is made up of gravitons? If gravitons do really...

Gravity - Integrating General Relativity with "Gravitons" Every time I read about the hunt for gravitons I never see an explanation of how they will actually produce their effect. Maybe "integrating" is not the best word, but how will gravitons, if proven to exist, lead to the warping of...

When a charged particle accelerates it produces photons and loses energy which is part of the reason why an electron cannot "orbit" a nucleus. I would think that an accelerating mass would likewise produce gravitons and lose energy so that all orbits would eventually decay. Is this correct...

hey all, I'm pretty new to physics. all I know is what I was taught at secondary school, which wasn't much to be honest.. sorry if this is a stupid question or in the wrong place or whatever, feel free to move/delete it if it is.. so what I'm wondering about is gravitons. I know as good as...

First of all, I’m not well versed in Calculus or other tools required to fully grasp the latest understandings of QM or Relativity, so please take my question with a grain of salt. My question is simple. Do Gravitons exist? My intuition impels me to think of Graviton and Gravity in terms...

Maybe this thread should not be here. Are gravitons virtual or real. I've read that they are bosons, but... Also, are they expected to have momentum, virtual or otherwise? Thanks

I don't know if my question belongs to this forum but I get some troubles within my approach; what would you think of a theory predicting that some EM fields can exhibit the same (type of) energy-momentum tensor (emt) than the emt associated with some gravitational waves or fields ? Such...

I'm a complete newbie at physics so bear with me.. The minute a spaceship is out of the Earth's atmosphere and into the vacuum, the gravitational pull let's go and the spaceship is free. So what I'm asking is, how can the sun attract the Earth into its pull? Can gravitons travel in a...

hi i'm in a dielema. i don't know if it is the right place to post the thread. if every particle is destined by the universe to have some gravitionrl force then does graviton itself have gravity. there is no point of it not having if it is a particle as treaded by quantum physics nabodit

hi i'm in a dielema. i don't know if it is the right place to post the thread. if every particle is destined by the universe to have some gravitionrl force then does graviton itself have gravity. there is no point of it not having if it is a particle as treaded by quantum physics nabodit...

I am doing some research this summer with a professor and we are learning GR. For the first time I am thinking about gravity actually in terms of geometry and started to ask my professor questions. He is a VERY smart man but I didn't get exactly what I was looking for with one question. I asked...

http://arxiv.org/PS_cache/hep-th/pdf/0506/0506189.pdf Title: Gravitons as super-strong interacting particles, and low-energy quantum gravity Authors: Michael A. Ivanov Comments: 38 pages, 9 figures, Latex. Will be published in 2005 It is shown by the author that if gravitons are...

gravitons supposedley "transfers" gravity between two particles i know that gravitons supposedley "transfers" gravity between two particles, but can anyone tell me how gravitons work, and why they "transfer" gravity?

Hi I freely admit that I am new to this forum site and pretty new to physics in general, however I am eager to learn. I know extremely little about Quantom mechanics. I won't ask you to explain it all now, I simply request that somone explain to me what is known about Gravitons, why do we no...