Saturday, February 6, 2021

Creation Moment 2/7/2021 - Cracking the Creator's Mysteries of Time Travel?

 And though I .....understand all mysteries, and all knowledge;....and have not Love
I am nothing.
1 Corinthians 13:2
 
"General relativity handles the big familiar objects and events of the
universe, while quantum mechanics covers the invisible and strange micro-world that surrounds us, where subatomic particles can tunnel through barriers they have no business getting past, or where two particles thousands of light-years apart can instantaneously respond to each other's motions.....a link between special relativity (Einstein’s first theory describing space and time before he added acceleration in his general theory of relativity) and quantum mechanics was already well established. In fact, quantum field theory – which forms the basis for our modern understanding of how the building blocks of matter interact – unites quantum mechanics and special relativity. But it does it in a way that regards them as two independent and distinct pieces of a wider puzzle.

 Dragan felt that this connection must run deeper: “It's more than just being part of quantum field theory, more profound,” he says. “It's almost as if quantum theory does exactly what relativity allows and not a bit more.
 
Because there is no physical evidence that anything can travel faster than the speed of light, the faster-than-light solutions are always thrown away. But, mathematically, these solutions are still valid. 
So Dragan thought, why not keep the faster-than-light solutions and see what happens? 
When he did, he uncovered a world that would look more familiar to quantum theorists.In this world, instead of a particle following a well-defined path, its motion is hard to pin down, described by layers of complex probabilities that correspond to different possible outcomes, much like what is known as superposition in quantum physics. Moreover, if a physicist in this world tried to measure certain properties of this particle multiple times, they would not get the same result every time.  

Often though, these criticisms boil down to two points: 
--that no one has ever detected anything racing beyond light speed,
--and that if anything did travel that fast, time travel is possible. Time travel leads to what is known as causal paradoxes. The most famous of these is the grandfather paradox — the idea that if you travel back in time and kill your grandfather, your own birth will be impossible.
 
Dragan and Ekert argue that these critics miss the point. “We're not saying there are any objects that travel faster than light; there might be, but that doesn't enter our arguments,” Ekert says. “What we are saying is that you can look on the world from a perspective that is beyond light speed.”
 
 From this faster-than-light vantage point, you can swap the order of cause and effect. This is a key result because the underlying physics must remain the same regardless of whether you’re watching events unfold above or below the cosmic speed limit
--And if this is true, the pair argue that the order of events no longer plays a fundamental role in the theory.
Dragan says all of this means that there are no paradoxes to answer for at all. “If you look at it carefully, you find that the rules of causality are changed. But they are not completely destroyed, they are modified in precisely the way quantum theory tells us.
 Wired