"Physicists have identified a set of fundamental symmetries in nature. The three most important symmetries are: charge (if you flip the charges of all the particles involved in an interaction to their opposite charge, you’ll get the same interaction); parity (if you look at the mirror image of an interaction, you get the same result); and time (if you run an interaction backward in time, it looks the same).
Physical interactions obey most of these symmetries most of the time, which means that there are sometimes violations. But physicists have never observed a violation of a combination of all three symmetries at the same time. If you take every single interaction observed in nature and flip the charges, take the mirror image, and run it backward in time, those interactions behave exactly the same.
This fundamental symmetry is given a name: CPT symmetry, for charge ©, parity (P) and time (T).
In a new paper recently accepted for publication in the journal Annals of Physics, scientists propose extending this combined symmetry. Usually this symmetry only applies to interactions — the forces and fields that make up the physics of the cosmos. But perhaps, if this is such an incredibly important symmetry, it applies to the whole entire universe itself. In other words, this idea extends this symmetry from applying to just the “actors” of the universe (forces and fields) to the “stage” itself, the entire physical object of the universe."
This is just dumb speculative shit from paper churning clout chasers.
I mean most cosmological theories at this point are speculative right? As long as the math is pretty people seem to like it (e.g. string theory).
Yeah cus it’s bout damn impossible to test for things like string theory with our current tech/energy level.
Hell we just now confirmed the higgs boson and it’s been speculated to exist since the 50s.
Our capacity to theorize is far beyond our capacity to test. That doesn’t mean testing is impossible but it’s slow af compared to pure theory
Yeah I get that but I dunno why the commentor above thought it was “speculative shit from paper churning clout chasers.” Kinda odd
Its headline gore, as “runs backwards in time” is being shamelessly substituted for “is composed of particles with different fundamental properties produced through a symmetry during the initialization of the universe”.
It also isn’t something terribly new. Just a theory that’s being continuously explored and fleshed out as incremental discovers in fundamental physics trickle in.
hammer my benjamin button until I big bang
so there’s a universe where all of the poopoo goes back into your butt before you vomit perfectly formed food out of your mouth :scared:
Taught a class on time reversibility and thermodynamics last year and I’m drunk ama
How close are we to being able to reverse our time and undo this whole “capitalism” mistake?
Unfortunately, capitalism is extremely macroscopic so not very close at all.
Is there evidence that the past exists besides remembering an abstraction of it
The universe was created 37 minutes ago along with us and all our memories of earlier times
I just meant it more as, does a measurable aspect of the past, which you’d need to actually travel back towards it, continue existing or is it simply unexisted as soon as it passes and becomes the present?
In this scenario even that 37 minutes ago wouldn’t really be a thing lol
Not suggesting that there wasn’t a past, but I’m wondering if it’s a place still.
In other words: is the present the results of a now dead past, or do they both go on living in some way?
Wow. That is such a Gemini thing to publish.
