Could spacetime be an infinitely stretched/redshifted photon?

Well, you wouldn't be surprised to know that any field is just an mathematical abstraction anyway, if we consider the field as an infinitely stretched photon (or wave of the electromagnetic field) then the field itself *is* the photon at it's lowest energy state that it can be at, which isn't zero because it had energy to begin with. But how to represent a non-zero energy when infinitely stretched? Well, maybe with perturbations happening seperated by time and space in just the right amount dispersed through it all? Which could then be the "quantum foam" that we can measure and being the non-zero background energy of spacetime.
Ah but you are forgetting E=hν. If you "stretch" a photon - by whatever undisclosed means you have in mind - you reduce its energy. So if you stretch it infinitely, you reduce its energy to zero. And then it's gone!
 
Ah but you are forgetting E=hν. If you "stretch" a photon - by whatever undisclosed means you have in mind - you reduce its energy. So if you stretch it infinitely, you reduce its energy to zero. And then it's gone!
But what if energy can't be destroyed even if something is stretched infinitely much? Maybe there is a lowest possible state where energy just can't be zero even though the calculation says so? What if we use calculations that give infinities and other impossibilities even if we know they don't exist? Fluid mechanics around sharp corners for example, nature doesn't have to fit the equations, the equations fit nature to the extent they are useful.
 
But what if energy can't be destroyed even if something is stretched infinitely much? Maybe there is a lowest possible state where energy just can't be zero even though the calculation says so? What if we use calculations that give infinities and other impossibilities even if we know they don't exist? Fluid mechanics around sharp corners for example, nature doesn't have to fit the equations, the equations fit nature to the extent they are useful.
Is it at all possible you are just making this idea up in your own imagination? Are you expecting us to entertain a bunch of "what if"s strung together?
 
That's not really an answer. This is your idea; you need to elaborate.

For one: spacetime has four extended dimensions: three of space, one of time. It spans the entire universe, and all things we know of exist within it.

That seems to have nothing to do with a photon.
The electromagnetic field fills all that space and time, yet can't be shown to have an existence of its own until there is a disturbance in it, which could equally well be a disturbance in spacetime itself.

It's much more a matter of scale. What is the energy of a photon? It's just its frequency times the planck constant. To exist it hardly needs any disturbance of spacetime. Which is why we don't see it as such.

It easily rides the bending of spacetime produced by matter where the energy is the mass times the speed of light squared. A much higher energy is needed to create matter but it stems from the same electromagnetic field (all particles can be produced by smashing particles together giving rise to high energy).

To the extent that if you wanted to create matter from light you would need a frequency comparable to the speed of light squared (which would make the mass equal to planck's constant if such a frequency would be possible, which it isn't since that would obviously need to break the speed of light). That's also why we don't produce massive particles using photons, but we use electrons or protons that already have mass and accelerate them to close to the speed of light.

If matter, which obviously reside in spacetime and bends it, is also produced by the electromagnetic field, it is not a far stretch of the imagination that they are one and the same. Just a perturbation in the bending of spacetime. A wave within the wave.
 
Is it at all possible you are just making this idea up in your own imagination? Are you expecting us to entertain a bunch of "what if"s strung together?
How else would I make up the idea? Imagination is a wonderful thing, and to the extent that it can be entertaining I could expect you to entertain it. The "what if's" are important though, cause your objection wasn't without exceptions, exceptions that arise all the time when it comes to math vs nature. Also, the supposed existence of the field, which does stretch infinitely (as far as we know) has zero energy if nothing disturbs it. Though it is disturbed by quantum fluctuations, which is because we can't have zero energy, looping back the argument into itself. Because of that the infinitely stretched photon, if there was such a thing, wouldn't actually have zero energy, as there is demonstrably *no* *such* *thing* as zero energy.
 
Because of that the infinitely stretched photon, if there was such a thing, wouldn't actually have zero energy, as there is demonstrably *no* *such* *thing* as zero energy.
So you've answered your own question then.

Can an infinitely-stretched photon exist?
No. Since it would have zero energy, and (apparently) there is (demonstrably?) no such thing as zero energy.

This is good. It means that your conjecture, when followed through, gives non-sensical results. This means it is almost certainly wrong, freeing you to quickly abandon it with no compunctions and allowing you to move on to more fruitful explorations. The best kind of science.
 
So you've answered your own question then.

Can an infinitely-stretched photon exist?
No. Since it would have zero energy, and (apparently) there is (demonstrably?) no such thing as zero energy.

This is good. It means that your conjecture, when followed through, gives non-sensical results. This means it is almost certainly wrong, freeing you to quickly abandon it with no compunctions and allowing you to move on to more fruitful explorations. The best kind of science.
Made me giggle, but the best of science is to be stubborn, quickly abandoning ideas could lead you to miss something important. After all, the idea might be wrong in the end, but the path that leads there might show important things.

Either way, couldn't it be said, that since the electromagnetic field being infinite, *and* the electromagnetic field having a non-zero energy, is *already* an infinitely stretched photon? Just by the very notion of it? Is there a limit to how much a photon can stretch? If there is no limit then maybe that would be equal to the infinite electromagnetic field? And IF there is a limit, maybe that is actually the limit of the electromagnetic field itself?
 
But what if energy can't be destroyed even if something is stretched infinitely much? Maybe there is a lowest possible state where energy just can't be zero even though the calculation says so? What if we use calculations that give infinities and other impossibilities even if we know they don't exist? Fluid mechanics around sharp corners for example, nature doesn't have to fit the equations, the equations fit nature to the extent they are useful.
The problem is you can't just stretch a photon without any consequences. All red shift processes reduce the energy of the photon in the frame of reference of the observer.

If you insist "what if" you could, then you are already abandoning physics, in which case you might as well invoke purple unicorns or something.-_O
 
Made me giggle, but the best of science is to be stubborn, quickly abandoning ideas could lead you to miss something important. After all, the idea might be wrong in the end, but the path that leads there might show important things.

Either way, couldn't it be said, that since the electromagnetic field being infinite, *and* the electromagnetic field having a non-zero energy, is *already* an infinitely stretched photon? Just by the very notion of it? Is there a limit to how much a photon can stretch? If there is no limit then maybe that would be equal to the infinite electromagnetic field? And IF there is a limit, maybe that is actually the limit of the electromagnetic field itself?
As I said in post 11, an infinitely stretched photon would be a static EM field - and thus not a photon. And it would have zero energy.

But considering this is an artificial thought experiment and fairly pointless, as the real EM field of the vacuum isn't just a static field of zero energy, because of the uncertainty principle (hence virtual photons and zero point energy of the vacuum). So modelling the EM field of the vacuum in terms of just a single infinitely stretched photon would give the wrong answer. It would be a bad model.
 
Made me giggle, but the best of science is to be stubborn, quickly abandoning ideas could lead you to miss something important. After all, the idea might be wrong in the end, but the path that leads there might show important things.
Perhaps if one had infinite time.

But generally the idea is to start with something that has a good indication of bearing fruit, not the worst. And wild speculation - without prior evidence to support it - is a squandering of resources. After all, there are an infinite number of unevidenced speculative ideas one might pursue.

Following where the evidence leads is a pillar of science. And this is a science site.
 
Perhaps if one had infinite time.

But generally the idea is to start with something that has a good indication of bearing fruit, not the worst. And wild speculation - without prior evidence to support it - is a squandering of resources. After all, there are an infinite number of unevidenced speculative ideas one might pursue.

Following where the evidence leads is a pillar of science. And this is a science site.
We have already followed where the evidence leads, what you find is nothing new at all, since otherwise we would have found it. Following where the evidence leads doesn't uncover new things, cause evidence is what is of old things. What you need are new ideas and see if the evidence supports it. Otherwise you won't take even one step forward, science is stagnating because of ideas like yours. Just continue to read the books. I promise you, you won't find anything new.
 
The problem is you can't just stretch a photon without any consequences. All red shift processes reduce the energy of the photon in the frame of reference of the observer.

If you insist "what if" you could, then you are already abandoning physics, in which case you might as well invoke purple unicorns or something.-_O
Obviously anything infinite can't begin as anything else than infinite, so as you say, you can't stretch a photon to infinity if it wasn't infinite to begin with. There is no process to it, I suppose it is stretched infinitely to begin with, or at least equal to a photon as if it had already been stretched to infinity.
 
We have already followed where the evidence leads, what you find is nothing new at all, since otherwise we would have found it. Following where the evidence leads doesn't uncover new things, cause evidence is what is of old things. What you need are new ideas and see if the evidence supports it.
Perfect. I have this idea that the universe is powered by pixie dust.
I think TheVat once proposed that the universe was sneezed out of the nose of the Great Green ArkleSeizure.
We should explore those next.

Otherwise you won't take even one step forward, science is stagnating because of ideas like yours. Just continue to read the books. I promise you, you won't find anything new.
We are advancing our knowledge every day. Science is not stagnating at all.

Science seeks truth, not novelty.

Anyway, I see where this is going. I will report this to have to moved to a more appropriate section such as PseudoScience. Although, there isn't really a lot of science here, perhaps Free Thoughts would be better. Let us know.
 
As I said in post 11, an infinitely stretched photon would be a static EM field - and thus not a photon. And it would have zero energy.

But considering this is an artificial thought experiment and fairly pointless, as the real EM field of the vacuum isn't just a static field of zero energy, because of the uncertainty principle (hence virtual photons and zero point energy of the vacuum). So modelling the EM field of the vacuum in terms of just a single infinitely stretched photon would give the wrong answer. It would be a bad model.
I don't think an infinitely stretched photon would be a static EM field, in fact, I think it would be equal to the EM field, which isn't static, as you pointed out. I'm just saying that there is an equivalence of the EM field and an infinitely stretched photon. I don't see any reason why that wouldn't be the case. What else could it be?
 
The point would be a better understanding of what it actually is, and who knows, maybe someone good at maths can take the idea and merge the electromagnetic field with spacetime, which would be a great feat wouldn't you think? That everything is the same *thing* seem to be what everything points to, a step in that direction wouldn't be too far fetched.

That's just circularity. A photon is an excitation in an EM field, an EM field is a photon. It's like the homunculus argument, where the explanation is a repeat of what it is explaining. Something different has to be introduced to break the recursion.
_
 
Perfect. I have this idea that the universe is powered by pixie dust.
I think TheVat once proposed that the universe was sneezed out of the nose of the Great Green ArkleSeizure.
We should explore those next.
What arguments would you have for those ideas?


We are advancing our knowledge every day. Science is not stagnating at all.
That we are advancing our knowledge doesn't mean that science is not stagnating. There has been no major discoveries in quite some time, and none of the semi-major discoveries made compares to the ones that were made 50+ years ago. You could say that this is because there isn't much more to discover, no major revolutions to be found. But clearly we are missing some pretty big pieces.

Science seeks truth, not novelty.
Since there are still missing pieces we can't avoid novelty.

Anyway, I see where this is going. I will report this to have to moved to a more appropriate section such as PseudoScience. Although, there isn't really a lot of science here, perhaps Free Thoughts would be better. Let us know.
Reporting in contempt of new ideas seem to me to be very unscientific. Trying to ridicule new ideas is also very childish. What is the point of a discussion board if no one tries to break new ground, or have novel ideas? What would there be to discuss even?
 
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That's just circularity. A photon is an excitation in an EM field, an EM field is a photon. It's like the homunculus argument, where the explanation is a repeat of what it is explaining. Something different has to be introduced to break the recursion.
_
I agree. I also think that the EM field is actually just spacetime but at a different scale. I think exploration of that could be fruitful. I don't really see the need to separate them. When a photon loses energy due to being stretched that energy is taken up by the gravitational field, (at least according to these answers from Stack Exchange - Have redshifted photons lost energy and where did it go?), so there seems to me that there is a relation there. At least I think it's worth exploring ideas where the fields could be unified, since that could give us ideas or at least hints for a theory of everything.
 
What arguments would you have for those ideas?



That we are advancing our knowledge doesn't mean that science is not stagnating. There has been no major discoveries in quite some time, and none of the major discoveries made compares to the ones that were made 50+ years ago. You could say that this is because there isn't much more to discover, no major revolutions to be found. But clearly we are missing some pretty big pieces.


Since there are still missing pieces we can't avoid novelty.


Reporting in contempt of new ideas seem to me to be very unscientific. Trying to ridicule new ideas is also very childish. What is the point of a discussion board if no one tries to break new ground, or have novel ideas? What would there be to discuss even?
Science, maybe. After all, this is a science forum. There is a difference between new ideas based on science and just new ideas vaguely.

The real problem with your idea here is not so much the stuff about stretching a photon as the notion that you can equate an EM field with spacetime. That looks like a category mistake.
 
Science, maybe. After all, this is a science forum. There is a difference between new ideas based on science and just new ideas vaguely.

The real problem with your idea here is not so much the stuff about stretching a photon as the notion that you can equate an EM field with spacetime. That looks like a category mistake.
But that's the real point of the idea, to finally equate EM with spacetime itself, unifying those two aren't at all unscientific but something that at least some scientists strive for, at least those that haven't given up hope on it and certainly traditionally scientists have looked for ways of unifying the fields and spacetime itself. Cause if everything came from a singularity it would probably have been unified, so there should be a way of linking them together again.
 
But that's the real point of the idea, to finally equate EM with spacetime itself, unifying those two aren't at all unscientific but something that at least some scientists strive for, at least those that haven't given up hope on it and certainly traditionally scientists have looked for ways of unifying the fields and spacetime itself. Cause if everything came from a singularity it would probably have been unified, so there should be a way of linking them together again.
There can’t be. The units of an electric field are volts/metre. And a volt is a unit of energy/ electric charge. You cannot equate that with metres. Or with seconds. You are trying to set colour equal to smell.
 
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