The article itself doesn't go into much detail and the paper itself is locked out. From what the previews show, its interactions of qubits within an isolated quantum mechanical system, in this case a sole atom.
Beyond that the details are too fuzzy to tone down the sensationalism of this article.
[QUOTE=Angua;45254324]Not just a second dimension there would have to be one for each possibility of everything. Oh well i'm content knowing that no one knows yet, probably. It's not like SERN is actually a thing.[/QUOTE]
One of the most successful interpretations of QM [URL="https://en.wikipedia.org/wiki/Many-worlds_interpretation"]is actually really close to world lines[/URL], with the exception that they never interact after splitting.
Pretty much every other interpretation is more complicated, and the only one that is more popular relies on system-external physical objects.
At this point there's simply no good way to distinguish them though, [URL="http://www.livescience.com/26444-quantum-mechanics-physicists-poll.html"]as evident by scientists disagreeing over it[/URL].
[editline]30th June 2014[/editline]
[QUOTE=Take_Opal;45254095]I don't want time travel to be a thing. Science fiction, and people in general, have terrified me of what could possibly go wrong involving time travel.[/QUOTE]
It really depends on the structure of the universe. It's not exactly likely that you could just retroactively wipe out events like in Back to the Future.
[QUOTE=outlawpickle;45254609]If time travel was possible in the future, everything that has been effected by it in our past has already happened. Even if Hitler was assassinated or led to victory, that would be an alternate timeline separate from our own.
So have no fears... yet...[/QUOTE]
If there are infinite realities, there are probably many Eternal Reichs, and just as many Berlins totalled by nuclear flame. Many worlds where Franz Ferdinand didn't bite the bullet in Sarajevo, and many worlds where Tesla's death ray fell into the hands of the Central Powers. Hell, there's probably a world where a mad physicist discovered how to transmit and receive information from other realities, discovering the existence of what we can only speculate about.
And perhaps there are realities where the flow of time is different, perhaps faster, perhaps slower, maybe even in reverse to ours. If time-flow is relative to the qualities of different realities, then that'd probably be one way to enable time travel without that perilous mucking about with Alcubierre spheres or closed time loops.
Does that mean in the future I can go back to the past to fix every mistake I ever regret?
[QUOTE=nomad1;45255365]Does that mean in the future I can go back to the past to fix every mistake I ever regret?[/QUOTE]
Impossible
In doing time travelling to fix your mistakes you are making a selfish and unreasonable mistake with probably large repercussions, one you can only correct by travelling back in time and telling yourself not to travel back in time
[QUOTE=nomad1;45255365]Does that mean in the future I can go back to the past to fix every mistake I ever regret?[/QUOTE]
Personally I don't think time travel would be that precise, and even if it were there would probably be organisations dedicated to preventing consequential changes or at least minimizing the collateral damage caused by improper time-shaping.
[QUOTE=WhyNott;45254102]Don't get your hopes too high boys, I bet that around post 10 someone from the Facepunch's science team will come to this thread and explain how the article is unprofessional and the time travel achived this way is of no use to anyone because of some quantum phisics catch[/QUOTE]
the only way you could've predicted this is if you're a time traveller
real talk I don't believe we will ever time travel because we would've seen some time travellers around
unless they dodge the grandfather paradox by jumping to a 'different universe' or something
[QUOTE=nomad1;45255365]Does that mean in the future I can go back to the past to fix every mistake I ever regret?[/QUOTE]
No, because that would be a mistake in itself
obviously this is fake. it has nothing to do with driving a DeLorean at 88mph.
[QUOTE=Tamschi;45255217]One of the most successful interpretations of QM [URL="https://en.wikipedia.org/wiki/Many-worlds_interpretation"]is actually really close to world lines[/URL], with the exception that they never interact after splitting.
Pretty much every other interpretation is more complicated, and the only one that is more popular relies on system-external physical objects.
At this point there's simply no good way to distinguish them though, [URL="http://www.livescience.com/26444-quantum-mechanics-physicists-poll.html"]as evident by scientists disagreeing over it[/URL].
[editline]30th June 2014[/editline]
It really depends on the structure of the universe. It's not exactly likely that you could just retroactively wipe out events like in Back to the Future.[/QUOTE]
And at the same time, the effects of potential time travel into the past is a huge "we dont fucking know" scenario. Paradoxes etc. are possible but do we really have any idea how it would work at all? If we'd even end up in the same "universe" if there are multiverses?
if the multiple universe theory is true, and time travel and time tourism become big things, nobody will ever return to the same reality lol
JohnnyMo1, we need your professional analysis in here
But on the plus side, even if the heat death of the universe threatens to end the immortality of our synthetic descendants who are like artificial brains in jars, being able to phase into another reality would allow us to escape the entropic horrors that lie between the end of one universe and the start of the one that comes after.
[QUOTE=Take_Opal;45254095]I don't want time travel to be a thing. Science fiction, and people in general, have terrified me of what could possibly go wrong involving time travel.[/QUOTE]
What would you care, if someone went back in time and changed things you would never know.
This is also assuming that the universe functions on only one timeline, and that any changes in the past would change everything on a single linear timeline.
Not to mention if time travel has already been invented in the future, do you think we would notice if someone had changed the past?
What kind of popcorn and microwave did they use in the simulation?
[QUOTE=Ninja Gnome;45255524]if the multiple universe theory is true, and time travel and time tourism become big things, nobody will ever return to the same reality lol[/QUOTE]
Not exactly, seeing as the different time lines will only converge at one single points that a set in time and can be changed but that will branch of into a new segment time line, but you will still be running the time line you came from and you will be brought back to that time lines history, I doubt you would be able to visit divergent time lines as they are your multiverse counterparts history's and time lines. Going through time is one thing but having the power to go to different parallel universes would be next to impossible as I see it, you would need the power that's bigger and outside the universe to do that.
[editline]30th June 2014[/editline]
[QUOTE=Rocâ„¢;45255678]What kind of popcorn and microwave did they use in the simulation?[/QUOTE]
Why can I smell blue?
[QUOTE='[Seed Eater];45255561']JohnnyMo1, we need your professional analysis in here[/QUOTE]
You didn't intone the summoning rite correctly, but I guess this is good enough.
The article is suuuper vague so I'm gonna try to get the full article and then I'll get back to it.
[QUOTE=ironman17;45255564]But on the plus side, even if the heat death of the universe threatens to end the immortality of our synthetic descendants who are like artificial brains in jars, being able to phase into another reality would allow us to escape the entropic horrors that lie between the end of one universe and the start of the one that comes after.[/QUOTE]
thats assuming we dont get wiped out many billions of years before that happens (we will)
Never say die, there's always the possibility we could reach the singularity and become immortal. Hell it probably already happened in some other universe.
[QUOTE=Take_Opal;45254104]I will die because of some ass hole and time travel.[/QUOTE]
I'm still not sure if that's how it works. Even if it were a single closed timeline, and you were killed 5 years in the past, I don't think you would disappear instantaneously, I think the changes would sort of ripple out in realtime, meaning it would take five years to catch up with you (at which point you'd be another 5 years in the future) and you'd always be ahead of your death by five years.
So we're moving towards time travel. But how soon until some girl in another universe can shout "Booker, catch!" to throw nuclear warheads for us to catch every time we need a couple?
So first of all, these quantum closed timelike curves are different from classical ones in that they don't allow paradoxes whatsoever. So basically it's almost not even time travel. You couldn't do anything time-travel-y with them. It's been known that these could possibly exist since at least 1991, so this isn't really anything earth-shatteringly new. Hawking's chronology protection conjecture is only to prevent CTCs from forming on [I]macroscopic scales[/I].
is it possible that potential paradoxes would just resolve themselves? I don't genuinely believe in time travel what so ever, but that's always been a question of mine. It's not something we can really figure out in someways, but it makes me wonder.
[QUOTE=Zonesylvania;45254040]No tachyon manipulation? I am disappoint, but I guess we haven't advanced far enough for that, even though it might be purely hypothetical.[/QUOTE]
Turns out all realistic models of tachyons don't actually send signals faster than light. It seems at first that a particle with imaginary mass should travel faster than light but analyzing fields with negative mass squared in quantum field theory shows that they don't actually allow faster than light information transfer.
[editline]30th June 2014[/editline]
[QUOTE=HumanAbyss;45256171]is it possible that potential paradoxes would just resolve themselves? I don't genuinely believe in time travel what so ever, but that's always been a question of mine. It's not something we can really figure out in someways, but it makes me wonder.[/QUOTE]
That's what I've always felt about paradoxes. Basically what happens is when you know the past is the only thing that [I]can[/I] happen. Some event that doesn't change even when you know the outcome (since I don't believe in free will anyway). But I remember reading a paper a while back that I think was by Kip Thorne analyzing the dynamics of particles going through closed timelike curves and even classically their motion is fucked up. I trust Kip Thorne much better than myself. I'll have to go find the paper again, though.
[editline]30th June 2014[/editline]
Echeverria, Klinkhammer, and Thorne, [I]Billiard balls in wormole spacetimes with closed timelike curves: Classical theory[/I]
'When followed assuming no collisions, the trajectory takes the ball through the wormhole and thereby back in time, and then sends the ball into collision with itself. In contrast with one's naive expectation that dangerous trajectories might have multiplicity zero and thereby make the Cauchy problem ill posed ("no solutions"), it is shown that [I]all[/I] dangerous initial trajectories have [I]infinite[/I] multiplicity and thereby make the Cauchy problem ill posed in an unexpected way: "far too many solutions."'
Incidentally according to the abstract, they did a second paper analyzing the quantum case and find that the fucked-upness disappears! Imagine that: this half-remembered paper turned out to be directly relevant to the thread.
[QUOTE=JohnnyMo1;45256180]Some event that doesn't change even when you know the outcome (since I don't believe in free will anyway).[/QUOTE]
Why not?
[QUOTE=supersnail11;45256312]Why not?[/QUOTE]
Because we haven't discovered the local excitations of the free will field yet!
[QUOTE=supersnail11;45256312]Why not?[/QUOTE]
Personally, I can't believe in free will as long as we have knowledge that the brain is controlled by electricity, and chemicals. That our feelings, thoughts, wants and desires, everything we are is a result of chemical and electric events occurring in the brain according to strict rules of physics and biochemistry.
If free will exists, it has to defy this system. If it can defy this system, then things that change the chemical balance of the brain to change ones emotions(Like effective anti depressants) would never work.
A sufficiently complex system affected by a large extent by its environment cannot describe and predictively analyse itself objectively, so free will exists in me but not in anyone else (from someone elses perspective, they have free will but nobody else does)
So if you travel back in time and stop your parents from meeting, thus you will never have been born.
But then you wouldn't have been able to make the time travel to make that happen so wouldn't it all p much all just sort it self out, you don't need to worry about anything!
Irc wormholes back in time are theorized to essentially explode the moment they are created.
Sorry, you need to Log In to post a reply to this thread.
