It is the hypothesis that all observers are actually manifestations of a single observer experiencing all of time, space, and every point of view. All world lines across spacetime are parts of one single line "like a huge tangled knot" traced out by the one observer.
I always loved this as it seems to be a more modern way of interpreting the monad. Could it not be the case that all particles are actually just one thing that is not subject to time and that our reality is a snapshot of a matrix of its different potentials?
Even if there were as many positrons as electrons in the universe, I don't get the time-reversed character at a macro level. When leaving antimatter out of the picture, I dimly understand that the arrow of the arises from entropy. If time reversed particles are antiparticles, shouldn't we sometimes see a diffuse cloud of antiparticles in a lab spontaneously condense into a very low entropy concentrated configuration?
The answer is that they don’t literally go backwards in time showing reverse causality. They are representable in QFT by reversing the time component of their counterpart, which doesn’t impact how they interact with broader causality, just their internal configuration. Further - this does not play out in the lab as reversed causality even between anti particles. You can collide two positrons then detect them later at their destinations just fine in normal causality. It’s a shame because it would be really sweet to find some reversal of entropy and causality somewhere or somehow!
_We_ are still traveling forwards in time. If you followed a cloud of antiparticles backwards in time along its direction of travel, then you would see entropy decrease yes, though regular particles would do the same if we followed them back in time.
Gotta admit, that is probably my favorite Wikipedia article. It reads like a conversation between two stoned teenagers (which, admittedly, a lot of cosmology and quantum physics do, to non-physicists like myself).
Space and time are illusions. So probably true in some sense...There is probably no electron at all...I mean, one would be quite arbitrary, why not two?
My thought is that if there's only one electron, then its probabilistic location at a place and a time, should be impacted by its own energy across all places and times. That quantum gravity comes from generalizing the Schrodinger's equation to include these energies in the phase of the wave function, causing the phase to skew and the probability to update towards the location of large mass/energies.
IANP, but Ive always thought you should be able to observe reverse causality in a positron if true. That’s the primary effect of going backwards in time - a reverse in entropy.
The other side of the theory is the positron hidden in the proton. I assume a particle collider should be able to falsify this.
But it turns out antimatter isn’t supposed to actually move backwards in time but follows the same causality as everything else. It’s just that they represent their matter pairs configuration mathematically by reversing the time orientation. This isn’t super obvious but it’s very much different than going backwards in time literally. Sad!
Maybe you could disprove it by observing a electron/positron pair being created and then annihilating each other, forming a closed loop that couldn't be part of the single path traced by a single particle.
This is yet another case where a layman-written wiki article about physics is highly confusing to other laypeople, because it only tells you half the story. Particularly because it seems to be based on a chapter of Feynman's popular science book. But the book actually goes on and points out how Feynman immediately dismissed Wheeler's hypothesis, because the universe contains a lot more electrons than positrons. You'd have to explain that imbalance first if you want to entertain this line of thought.
Yea, it's really more about the fact that all electrons are exactly the same regardless of the level of precision we look at them. It would be like if we found another earth and that earth was the exact same earth. Not earth like, not very close to earth. The exact same earth down to the smallest fundamental level.
As a layperson myself - how can we tell that a distant celestial object is not made from antimatter? Afaik, it doesn't behave differently from matter, other than it annihilates on contact.
Also even if we could, that would only describe the practically and theoretically observable universe, which doesn't rule out other places looking very different (on its own)
Because distant celestial objects accelerate a lot of matter away from them as parts of different processes. For example if there were a sizeable chunk of space were antimatter than at the edge of this space there would be a constant glow of annihilation. We don't see that anywhere (well except things like quasars doing this at small scales.
So, yea, it would have to be outside the observable universe in which that means we can do no empirical science on it therefore it not being real to us.
it's important to realize that very few physicists accept that idea
right up there with everything that will happen in the universe has already happened and it's just a matter of zooming out on the entire time dimension (some use that idea to explain "spooky action at a distance" quantum entanglement and the quantum eraser)
but I love how wikipedia even links the PBS Space Time about it
Then wouldn't it be "one-photon"? I've heard (but don't fully understand) that massed particles are simply photons trapped in toroidal vortices, which gives them an outward charge field and lets them interact with the Higgs. Annihilation supposedly just being untangling the toroid.
Black hole, or singularity? Black hole describes the event horizon and singularity describes the point like object that would exist in a non-rotating black hole.
Asimov's 'The Last Question' is another good one that's in line: https://users.ece.cmu.edu/~gamvrosi/thelastq.html
(animated version)
It is the hypothesis that all observers are actually manifestations of a single observer experiencing all of time, space, and every point of view. All world lines across spacetime are parts of one single line "like a huge tangled knot" traced out by the one observer.
https://en.wikipedia.org/wiki/Brahman
https://en.wikipedia.org/wiki/CP_violation
The main referenced wiki suggests that the missing positrons are inside protons, but recent a recent LHC experiment asserts CP-violation over baryons.
https://en.wikipedia.org/wiki/Maxwell%27s_demon
The other side of the theory is the positron hidden in the proton. I assume a particle collider should be able to falsify this.
But it turns out antimatter isn’t supposed to actually move backwards in time but follows the same causality as everything else. It’s just that they represent their matter pairs configuration mathematically by reversing the time orientation. This isn’t super obvious but it’s very much different than going backwards in time literally. Sad!
Also even if we could, that would only describe the practically and theoretically observable universe, which doesn't rule out other places looking very different (on its own)
So, yea, it would have to be outside the observable universe in which that means we can do no empirical science on it therefore it not being real to us.
Is this a diagram of particles interacting or a single thread weaving through time? Pick your metaphor.
right up there with everything that will happen in the universe has already happened and it's just a matter of zooming out on the entire time dimension (some use that idea to explain "spooky action at a distance" quantum entanglement and the quantum eraser)
but I love how wikipedia even links the PBS Space Time about it
* https://www.youtube.com/watch?v=9dqtW9MslFk
Probably not, but apparently some of the math does work.
There's been some attempts to model all particles as micro black holes or stable quantum scale gravitational objects of some kind.