Alternate Dimension

Preface

Everything said here is more of a thought experiment than what could happen in actuality. I do not at all keep up to date on anything having to do with time travel or quantum theory or any relating matter, so none of these statements are informed about popular thought.

Idea

Assume that we have a device, and this device has the ability to take a snapshot of all the elementary particles in the universe at that point in time, taking all possible factors into account. The snapshot would describe everything perfectly at the point in time, as the only difference between the present and the past are the particle arrangements. It can be assumed that every particle arrangement so far in the universe is unique given the assumption that the universe has always been expanding.

If the only difference between the present and the past are the arrangement of particles, it can be proposed that another device that is able to rearrange all particles into a particular state would be a method of going back to the past. The snapshot would be put to use in this instance and it would surely go back to the past.

There are many issues with this. The first being that neither of these devices could exist for obvious reasons. The second issue is that the time paradox in which a loop will occur. This is a common paradox brought up in every discussion on the matter.

There are two ways to get around that paradox, both involve a method of returning to the present. This could be done by taking the molecules from the past and forming the particle arranger in the past. There could also be the suggestion of creating new matter, but there is no reason to break another law. By altering the past, it would be possible to send anything back to the past, including people. Getting back to the present would be simple as there would have been a snapshot of the present taken at the moment of going to the past.

Alternate Dimension?

An odd issue with this is that it would not technically be going back to the past, but it would rather be going to an alternate dimension. By alternate dimension , I mean to say a particle arrange that could not exist in the current dimension. Everything still occurs with the same matter in the same space, it is just that the matter is occupying a space that was not possible in the current dimension. It is like if there was a race and the particle arranger put the last place runner in first. That would not be the same race as it would be impossible for the last place runner to occupy first place at that particular moment of time.

This is a difficult part for people to agree with as everything is the same except the runner, why would minor changes be considered an alternate dimension. The answer to this is that the minor changes could not exist in the previous dimension. Laying out a totally different particle arrangement, say organizing all molecules alphabetically would clearly be an alternate universe as that arrangement could not occur in the current universe, rather it is an altered universe. Just the same is true of minor changes.

Other Applications

This device wouldn't at all have to be used to change all particles, it can be reasoned that it could select just the particles belonging to earth. Some possible uses would be:

-Creating structures
-Bringing back people who died in an accident
-Bringing in resources from parts of the universe that don't matter
-Teleportation to anywhere
-Preventing the destruction of earth by returning dangers to a previous state
-A form of immortality
-Maintenance would be a thing of the past

Now of course the devices would have many dangerous uses and I will leave that up to your imagination.

Conclusion

Unless there is something I am not aware of, this would be a method of time travel, and it would be possible to travel to an altered past. The other applications are quite interesting. Of course this isn't talking about anything possible or real, yet it is still interesting to think about.