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  • 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?
    by abeppu
  • 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).
    by krylon
  • This theory adds more complications than it creates simplifications.
    by amelius
  • 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

    * https://www.youtube.com/watch?v=9dqtW9MslFk

    by ck2
  • CP-violation would appear to rule this out.

    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.

    by chasil
  • 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?
    by edgyquant
  • A twist on this theory: One-Observer Universe.

    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.

    by lioeters
  • In the line, I recommend „The Egg” by Andy Weir https://www.galactanet.com/oneoff/theegg_mod.html
    by stared

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