Is my antimatter self asking this question backwards right now?

Great question . Also would all your protein chirality still be right handed?
That is a fun thought experiment. You probably don’t want to meet up with your antimatter self.

You do not have an antimatter self. There are only very small quantities of antimatter in the universe, and they have been formed from high energy collisions or radioactive decay long after the Big Bang. See Baryon Asymmetry.

But is there an anti matter version of this universe in a sort of parallel antiuniverse or something maybe??? And therefore a antimatter self in that universe?

@FireMadeFlesh, I always believed that for every particle of matter that existed, their was an antimatter count part to go with it.

@emergence, that could also be the case. Theoretically there are an infinite number of parallel universes with an infinite number of possibilities. So, theoretically, a universe consisting of our antimatter selves exists. Theoretically of course.

So if that was actually the case, we are making a huge assumption too that there are parallel developments in these parallel universes aren’t we? Or is that our understanding of parallel universes in the first place?

I mean, for example, let’s say a butterfly flapped it’s wings one less time in the antimatter universe, failed to cause the hurricane that killed your great grandmothers future lover, so she ended up with the lover instead of your great grandfather and your antimatter self was never born?

Or is a parallel universe assumed to be another, just parallel? So my antimatter self is currently hypothesising about my matter self, as I am currently hypothesising about my antimatter self?

Sorry I don’t know much about this stuff but find it fascinating!

I’ve only dabbled in the arts of the multiverse theory. But yes, that would be possible. All of course assuming that they exist, they’re theoretically thought to. Pretty much every single possible outcome (infinite outcomes) would or will have happened. Every single possible outcome for everything that has ever happened in the universe has an infinite amount of solutions. Mind boggling stuff, I know.

@Parrappa I think you have misinterpreted that idea. There is an antimatter double for every type of matter particle, but not for every individual particle. There are anti-up quarks which are the opposite of up quarks, but there are far more up quarks than anti-up quarks. Parallel universes have the same matter in them as ours – not just the same proportions, but the exact same particles. Quantum computing works on that principle, in that it relies on communication between the states of particles between the multiple universes.

Please wait a few moments for my blotter to kick in, then I may be able to better address your question…

dluoC eb. dooG noitseuq.

There seem to be all kinds of myths about the nature of antimatter. Someone suggested negative energy a few weeks ago. Now it’s about time moving backward. Antimatter is like matter. An antimatter star would fuse antihydrogen into antihelium keeping antipeople toastily warm while their anticlocks keep ticking away straight into the same future.

There’s some speculation about negative time arrows during a Big Crunch of our universe.

so what is the connection between antimatter and matter then? Like, if there is an antimatter for ever matter, is a particle of matter then assumed to be connected to the same particle of antimatter? So my antimatter self really is typing out this same question about my matter self as I type?

Is there some concept of something like a soul that connects these things? Like my soul is the connection between all the universes that may exist, perhaps itself emanating from another dimension?

PS @FireMadeFlesh that is MIND BLOWING about quantum computing!! so how do particles communicate across universes? can we then also communicate with our antimatter selves in the antimatter universe? would we have to learn how to speak backwards? (where did this backwards element come into play?) is this why we hear strange things when we play tapes backwards? j/k

@emergence The multiverse theory is based on the Law of Conservation of Information. When there is an event governed by quantum probability, all outcomes must occur for information to be conserved – but we only ever observe one outcome. Multiverse theory addresses this problem by saying that all other outcomes occur in universes parallel to our own. If an electron is in state A in our universe, the exact same electron is in state B in a parallel universe. The important point here is that it is the same particle, not a copy.

Quantum entanglement, according to this theory, by forcing two electrons into the same state. When you remove them from each other, they are in exactly the same state for all quantum numbers except location. Electron A is in my hand and B in yours in our universe, but in our parallel you have A and I have B. Because A is A, if I change its state in our universe, it will change state in your hand in our parallel. That will affect B due to proximity across the universes, which will in turn change the state of my B – it doesn’t matter how far away you are.

Quantum computing takes advantage of these principles to perform calculations in a way so that part of the calculation happens in each of the universes involved, and all receive the outcome.

My point with this whole question though, is that you have no antimatter self. Your self in any parallel universe is exactly like you would be with a small number of electrons in different shells – no outsider could tell the difference. There is no antimatter universe, because whatever caused the baryon asymmetry we observe would undoubtedly have acted across all universes, causing the same matter/antimatter imbalance we observe in our universe. The only antimatter we know of exists in microscopic amounts at particle accelerators or in high energy accretion rings around massive stars.

@emergence – If quantum computing is best explained by the many-worlds interpretation (or Tegmark’s Level III multiverse) i.e. parallel processing in parallel universes these various universes would also consist of matter, not antimatter.