Scratch

If you enjoy theoretical physics then discuss here...
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The current discussion point is:

Time travel! Theories to explain the structure of time, how to time travel, and how to solve paradoxes.

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Helpful Resources:

The 10 Dimmension Theory Part 1
The 10 Dimmension Theory Part 2

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List of Theories (red means old theory that has changed)

By maxskywalker
I think that I may have solved every time paradox EVER.  I think that time has a past, present, and future all at the same spot, but we're just in what we call the present, and we can't easily move significant distances.  So that there's a past you typing this topic RIGHT NOW, but in the past, and there's a past me typing this reply RIGHT NOW, but in the past, all thinking that this is the first time they (we?) posted (well, not really, because I'm the one who came up with this theory and therefor believe that I my future selves may have already typed it).

by me
So I think that it started out with one universe and then more universes are created as each action was done, with the diffrent options as paralell universes which dont affect the MAIN universe.
The significance of a main universe is that it was the first universe. All other universes go off of it.

Here's an example of how it would work:

You'r in a car, and you come to a fork in the road. You turn right. Once you turned right, a new universe would branch off where you would turn left. The universe where you turned right is the main universe, and the one where you turned left is a "side universe"

by me
Well, I think that time travel is like teleportation in the fact that  basically it is copying yourself and putting the copy in a new place or time then deleting the old copy... is that like a linear version?

by wmays
I have a theory about parallel universes. They are not parallel, just like the sea is not parallel; it doesn't mean anything. Also, they aren't strictly speaking "universes", because each universe is not actually a "thing", as such. It is just a way of looking at what is  technically known as the "Wasogm", or "whole sort of general mish-mash". The Whole Sort of General Mish-Mash is not actually a thing either, but is just the sum total of all the ways of looking at it if it did.

by maxskywalker
The same thing happens in every instance, because it's all the same universe!  And there are no 'main' or 'side' universes, because it's all just different moments in the same timeline.  And I don't really think there's a 'first' universe.  Other universes would not branch out like a spiderweb because it would all be the same universe: this universe.  It's just different instances in time.  Not parallel/alternate universes.  Just this universe, but different times in this universe.  If you're in a car and you turn left, then when you wait 2 seconds afterwards, the instance of time 2 seconds before what you live in will turn left, because that's what happened.  Then they will wait 2 seconds while the instance of time 4 seconds behind you (or two seconds behind them) turns left and waits in their own turn, and so on.  It's all the same path.
Theoretically, I suppose that given the theory of multiverses, each multiverse COULD have its own line of time, but my theory only regards this one.

by deatheater
I believe that there are multiple timelines, and if you did travel back in time and say kill your grandfather, it wouldn't affect you because it would only affect the new timeline you were in, and if you were to travel back to your timeline then nothing would have changed.

by rdococ
I think that there is already thousands of "past" mini-universes and one of our "present" mini-universe, which we move to a newly created mini-universe which is now the only present, and the creation depends on what is happening. So, the future is created after the present is defined (and the process continues, and the future becomes the present), and we could possibly time-travel (possibly with normal travel, infact it's possible in the real world).

Because of time dilation, every piece of matter is always "alive" to have real consiousness in either a present or a past mini-universe.

If you did travel back in time and kill your grandfather, you would still exist, because when you're born you're not connected to the consiousness of your parents anymore. Think if your parents died in the present. You would still be alive. Same with them, if their past was dead, their present would be alive. Think of a baby, that is not existant in the past. Then, it exists, and then it's born. Before that, it didn't exist or was "dead" in all kinds. If the baby didn't exist in the past, then with some theories, the baby would die instantly. This is the same with lots of events involving matter. However, this would only be proven biologically, because scientifically everyone has always existed in some form of matter. The universe has a specific number of matter and energy, so matter or energy cannot be made, unless you use energy to make matter, or matter to make energy (which is not possible). Because of that, the paradox is solved and the result is that you're still alive.

by me
Time travel defies the laws of thermodynamics.


Time travel would be spontaneously creating energy>matter, because when you time travel technically you still exist in the past.

This means that either the laws of thermodynamics are wrong or time travel is impossible.

So, here's a solution:
I think that there's a main universe where time continues from a point, and each instant in time is another smaller universe, and time continues normally from the point in each of the other universes. When you would time travel, you would teleport to the universe from the specific point in time. There would be 'ripples' in spacetime that would signify that an event would be changed, and in the main universe the event would be changed, but in the universe that you changed the event in, it would continue as if you hadnt changed anything, because another 'duplicate' universe would form when you changed an event in the offset universe.

by agscratcher
You see, we exploit the qualities of something at absolute zero: superconductivity and superfluidity. Using this, we can exclude a magnetic field from the substance and use its superfluidity to creep around it. If we direct the magnetic field in a certain direction, we can control where the substance moves. The vehicle is dependent on the movement of the superfluid. However, for the superconductivity to work, we need to run an electrical current through the substance. This is why plasma supercooled to absolute zero would be the ideal candidate. If we could somehow manipulate the superfluidity to work at extremely fast speeds, you could, in theory, get very close to FLT travel.

by agscratcher
You don't accelerate the superfluid, you accelerate the vehicle. Normal propulsion combined with my method could reach pretty fast speeds. But then, when you're fast enough, you use the electromagnetic field as a sling of sorts, still using normal propulsion. You then inject the supercooled plasma into the fuel. The result is reheating of the plasma and an extra oomf to your speed. BRILLIANT!

by agscratcher
Electromagnetic radiation (that includes light) contains both electric and magnetic properties. Why not use it as a platform for out absolute zero experiments?

by me
Now we need to find out how to get a substance to 0 Kelvin, and then get the superfluidity to work at increased speeds.

Noting the "very close to FTL travel", if you could use a velocity/intertia system, then by transferring energy, you could get it to faster than light.

However, coliding theories here, the amount of time it would take to get an object about the size of a space ship to the speed neccesary, you would be on the edge of the universe, and would then go into another universe, therefore you already would be in a different time. However, that's only for going back in time, to go forward you would need to go faster than light. So you would have to loop around the universe.

Alternatively, you could create a device which spontaneously creates tachyons, then almost silmountaniously reverses them and destroys them. The reverse is neccesary, as otherwise it would take many years to slow down to a normal speed after you have reached FTL speed.

by agscratcher
1) I mentioned using light itself as a platform. However, light never goes in a concrete, uniform direction. So, I decided you could move across lasers.

2) I then realized that lasers would be inefficient, as they're weaker than actual light. So, I decided trying to find a method to control light to move in a concrete direction.

3) I then realized that only one thing could be powerful enough to do this: gravity. We need to create a controlled gravity field where the light would be forced to bend into a concrete direction. At first, I thought the thing we'd need to make the proper artificial gravity field would be a miniature black hole, but I though it might be too dangerous. I then decided on dark matter as the candidate. Unfortunately, we don't know what dark matter is. Boo hoo.

4) REJOICE! I looked back on my mini black hole theory and realized it had some truths to it. Remember when everyone was freaking out over the Large Hadron Collider having the potential to destroy the world by sucking it into an artificial black hole? The answer to our problem is a miniature Large (lol oxymoron) Hadron Collider.

by samtwheels
you could aquire [dark matter] by using some super-rocket to push a star or large planet, and then using gravity to capture and contain  it.

by agscratcher
Now moving on to a different discussion, I figured out why black holes get bigger as they suck more in. They don't. You see, because there is less mass in the universe when a black hole absorbs it, the universe gets smaller. So in reality, they're just getting proportionally bigger.

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Last edited by wolvesstar97 (2012-04-12 02:17:08)