Time travel and its connection with philosophy.

“The 2022 physics Nobel Prize was awarded for experimental work demonstrating fundamental breaks in our understanding of the quantum world, leading to discussions around “local realism” and how it could be refuted. Many theorists believe these experiments challenge either “locality” (the notion that distant objects require a physical mediator to interact) or “realism” (the idea that there’s an objective state of reality). However, a growing number of experts suggest an alternative approach, “retrocausality,” which posits that present actions can affect past events, thus preserving both locality and realism.” (ScitechDaily, Time Twisted in Quantum Physics: How the Future Might Influence the Past)

Einstein’s Theory of Relativity dominates physics. The idea is this. When a particle’s speed increases. That causes time dilation. Time dilation means time slows when an object approaches the speed of light. At the speed of light, time stops. And beyond that cosmic speed limit, time starts to move backward. This means that inside a black hole, time should travel backward. So a black hole can transport information from the future to that point. There, the black hole formed. This point is where a collapsing star or quantum field turns into a black hole. Where. A collapsing star or quantum field turns into a black hole. At. That point. Escape velocity. Becomes higher than the speed of light. 

The event horizon is the point where escape velocity reaches the speed of light. Behind. That point. Escape velocity becomes so high. That even light cannot escape from inside that point.  

Because. Escape velocity in black holes is above the speed of light. Time should travel backwards in that object. 

It conducts information into a point; there, the singularity forms.  The idea is that a black hole is a wormhole channel between past and future. In. Some models. Wormholes are the channels through the universe. In those channels, all information and particles travel at the same speed. 

We can say that the wormhole is the long cosmic void. The plasma tornado surrounds that cosmic energy channel. The plasma tornado closes the wormhole inside it. The particle. That goes. Into the wormhole. Rides with an energy wave. And for transporting information. The other side of the wormhole must be at a higher energy level than the end side. 

That means. The stretched cosmic void could be placed there is no time. The other thing is that there is no entropy in the wormhole. Because there is no entropy, all particles can travel. As fast as light. The speed of photons in a wormhole is the same as that of all other particles. 

When quantum fields and objects travel at the same speed. So. The relative speed between the object and the field that carries it is zero. 

Lower entropy in a wormhole decreases scattering. Allows photons to travel faster than they travel outside the wormhole. Time stops in wormholes. We can think of the plasma tornado around the wormhole as a cylinder that dilates time. The idea is copied into the so-called Tipler cylinder. The Tipler Cylinder. A fast-spinning cylinder causes time dilation inside it. The fast-spinning cylinder acts as a wormhole. Things. Like gamma-ray lasers can form the wormhole. In that version, the wormhole is like a WARP bubble. The WARP-craft could cross the speed of light. 

Gamma rays form the bubble. In that bubble, entropy is lower than that outside the WARP bubble. A theoretical WARP drive can use antimatter annihilation to create that low-entropy bubble. This means. That if. The craft can form the low-entropy channel in space. That channel can pull the craft very fast. The energy and quantum fields behind that thing can push the craft into that low-entropy channel. 

"A wormhole visualized as a two-dimensional surface. Route (a) is the shortest path through normal space between points 1 and 2; route (b) is a shorter path through a wormhole." (Wikipedia, Wormhole) 

The time machine requires that time is a dimension. If time is not a dimension, it doesn’t exist. And time travel is not possible. Retrocausality can mean that we could transport information from the future. In that model, we could get information from the future. But more complicated particles cannot be transported. There is a possibility. That. If we make quantum entanglement. There is another: the transmitting side is in the Tipler cylinder. And the other is freely in the laboratory. That can make it possible to create a system. That benefits retrocausality to transmit information across time. This means that the future might influence the past. 

The most interesting thing in time travel is time dilation. The Tipler cylinder is based on time dilation. Of course, spinning the tube at the speed of light is not very easy to make in real life. There are tales about things like negative mass. That does not exist. But. A chain of small black holes or ultra-strong magnets could help. To keep. That fast-spinning cylinder in its form. Without those things. Centripetal force destroys that structure. Those magnets or black holes will be put in the middle of the cylinder. 

We can think of the Tipler cylinder as a time machine. In the normal universe, we cannot exceed the speed of light. But. The Tipler cylinder opens the possibility. To. Cross the speed of light virtually. The idea is this. The Cylinder can spin at the speed of light. Then the object travels in that cylinder at a speed that is about 50% of the speed of light. That means. Time dilation in this case matches 150% of the speed of light. This means that the Tipler Cylinder can form the virtual wormhole. In real life, the Tipler cylinder cannot reach that speed. But. If the object’s speed and the cylinder’s spin speed cross the speed of light. When we add them together. Those. Systems could exceed the speed of light. 

There is a model. A particle accelerator is put around the spacecraft. That accelerator accelerates particles to a very high energy level. That particle accelerator should cause time dilation in the craft. Another possibility is to use the metal rod that spins in the particle accelerator. If. That structure spins at the speed of light. And the craft travels ahead at 20% of the speed of light. That system can travel in time. The fact is that. The craft can stop time. And then. Transport its crew to another star. The craft’s speed should be 20% of the speed of light. If. The rod can reach 80% of the speed of light. That stops time. Then the rod accelerates to a speed, let’s say, 100% of the speed of light. 

That causes ultimate time dilation. Time starts to travel. In the opposite direction. And if that technology could be made. That system allows travel to stars. And if time is a dimension. That allows the crew to return to the point in time they left. Because the craft moves. The place they return to can be different. This means that if somebody has that technology. That means. Those creatures can travel to stars. And return. And no outsider can even notice that. But maybe time can travel backwards only in black holes. Or maybe time doesn’t even exist as a dimension. This means. We still could stop time. But traveling back in time is impossible. It’s also possible that information will be disturbed as much. That it cannot be returned to its original form. 

https://bigthink.com/starts-with-a-bang/donnie-darko-lessons-physics-education-mortality/

https://scitechdaily.com/time-twisted-in-quantum-physics-how-the-future-might-influence-the-past/

https://en.wikipedia.org/wiki/Retrocausality

https://en.wikipedia.org/wiki/Tipler_cylinder

https://en.wikipedia.org/wiki/Wormhole