It might be possible to detect gravitons after all
quantamagazine.org
It might be possible to detect gravitons after all
1–10 of 167 posts
Re: It might be possible to detect gravitons after all
#2That's a facinating read. I wonder what are the possible applications of "quantized gravity" ? GPS without satellites?
Re: It might be possible to detect gravitons after all
#3I'm with the debaters on this one, the energy levels of a bound quantum system are predetermined to change in quantized intervals irrespective of if they are coupled to a classical or quantum field. What theory of gravity is this experiment intended to falsify?
It would be great to have an independent gravitational wave detector though.
Re: It might be possible to detect gravitons after all
#4> physicists are debating what it would really prove.
Well, if we can detect the graviton before we have a working quantum theory of gravity, it would mean that gravity is in fact quantized and that we just need to figure it out. This would be a very big deal.
Re: It might be possible to detect gravitons after all
#5That's a facinating read. I wonder what are the possible applications of "quantized gravity" ? GPS without satellites?
constraints on theories of everything
Re: It might be possible to detect gravitons after all
#6That's a facinating read. I wonder what are the possible applications of "quantized gravity" ? GPS without satellites?
Cheap GPS receivers already have to do a bunch of tricks to get to the "okay" state they're currently at.
Military devices either use GPS, star tracking, dead reckoning, or some combination. For submarines, detecting gravity variations could also be used, but it wouldn't rely on the quantization of gravity.
In many places on land, you can use terrain landmarks.
Since most things are already either covered, or have improvements in development, I don't really see investment for your idea.
The improvements might even use "quantum" or "gravity", but I don't think the use of "quantum gravity" is very likely.
Re: It might be possible to detect gravitons after all
#7I don't understand what a graviton is. The article implies that it's something that communicates changes in gravity? Is that correct?
How does it communicate the magnitude of the change? By having lots of gravitons? Or does it have something akin to a frequency?
Re: It might be possible to detect gravitons after all
#8I don't understand what a graviton is . The article implies that it's something that communicates changes in gravity? Is that correct? How does it communicate the magnitude of the change? By having lots of gravitons? Or does it have something akin to a frequency?
A graviton is the smallest possible unit of a gravitational wave. The amplitude of the wave corresponds to the number of gravitons, like you said, and its frequency to their frequency (quantum particles have frequencies that are related to their momenta). We're aware that light, at least, works like that.
Re: It might be possible to detect gravitons after all
#9That's a facinating read. I wonder what are the possible applications of "quantized gravity" ? GPS without satellites?
If the Romulans were talking to the Klingons over a link secured by the quantum no-cloning theorem, the Enterprise could use quantized gravity to entangle the ship's computer with their adversaries' quantum radios in a way that no matter-based shielding could prevent.
Re: It might be possible to detect gravitons after all
#10So I thought gravity was basically the curvature of spacetime. But if there's a "gravity" particle, those two things seem mutually exclusive?
Can someone who understands this please explain it to me, thanks!