Is time travel possible ? Physics of the Impossible
IMPOSSIBLE = I M POSSIBLE
Newton said : Time is like arrow, once fired never returns back. One Second on earth is equal to one second on Jupitor.
Einstein said : Time was like just like a river, which moved around stars and galaxies, speeding up around light bodies and slowing down as it passed around massive bodies. One second on the earth was Not one second on Jupitor. Clocks scattered throughout the universe and runs with a different speed.
Einstein’s neighbor at Princeton, Kurt Goedel, perhaps the greatest mathematical logician of the past 500 years, found a new solution to Einstein’s own equations which allowed for time travel! The “river of time” now had whirlpools in which time could wrap itself into a circle. Goedel’s solution was quite ingenious: it postulated a universe filled with a rotating fluid. Anyone walking along the direction of rotation would find themselves back at the starting point, but backwards in time!
In his memoirs, Einstein wrote that he was disturbed that his equations contained solutions that allowed for time travel. But he finally concluded: the universe does not rotate, it ex- pands (i.e. as in the Big Bang theory) and hence Goedel’s solution could be thrown out for “physical reasons.” (Apparently, if the Big Bang was rotating, then time travel would be possible throughout the universe!)
Then in 1963, Roy Kerr, a New Zealand mathematician, found a solution of Einstein’s equations for a rotating black hole, which had bizarre properties. The black hole would not collapse to a point (as previously thought) but into a spinning ring (of neutrons). The ring would be circulating so rapidly that centrifugal force would keep the ring from collapsing under gravity. The ring, in turn, acts like the Looking Glass of Alice. Anyone walking through the ring would not die, but could pass through the ring into an alternate universe. Since then, hundreds of other “wormhole” solutions have been found to Einstein’s equations. These wormholes connect not only two regions of space (hence the name) but also two regions of time as well. In principle, they can be used as time machines.
Now new solution of quantum theory to gravity (and hence create a “theory of everything”) have given us some insight into the paradox problem. In the quantum theory, we can have multiple states of any object. For example, an electron can exist simultaneously in different orbits (a fact which is responsible for giving us the laws of chemistry). Similarly, Schrodinger’s famous can exist simultaneously in two possible states: dead and alive. So by going back in time and altering the past, we merely create a parallel universe. So we are changing someone ELSE’s past by saving, say, Abraham Lincoln from being assassinated at the Ford Theater, but our Lincoln is still dead. In this way, the river of time forks into two separate rivers. But does this mean that we will be able to jump into H.G. Wells’ machine, spin a dial, and soar several hundred thousand years into England’s future? No. There are a number of difficult hurdles to overcome.
Stephen Hawking once opposed the idea of time travel. He even claimed he had “empirical” evidence against it. If time travel existed, he said, then we would have been visited by tourists from the future. Since we see no tourists from the future, ergo: time travel is not possible. Because of the enormous amount of work done by theoretical physicists within the last 5 years or so, Hawking has since changed his mind, and now believes that time travel is possible (although not necessarily practical). (Furthermore, perhaps we are simply not very interesting to these tourists from the future. Anyone who can harness the power of a star would consider us to be very primitive. Imagine your friends coming across an ant hill. Would they bend down to the ants and give them trinkets, books, medicine, and power? Or would some of your friends have the strange urge to step on a few of them?)
Source : http://mkaku.org/home/?page_id=252 (Michio Kaku - I M Possible Physics)
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Hadron Collider is Producing Nano-Blackholes
Like many physicists, Michio Kaku thinks our universe will end in a "big freeze." However, unlike many physicists, he thinks we might be able to avoid this fate by slipping into a parallel universe. "i
One of the most fascinating discoveries of our new century may be imminent if the Large Hadron Collider outside Geneva produces nano-blackholes when it goes live again. According to the best current physics, such nano blackholes could not be produced with the energy levels the LHC can generate, but could only come into being if a parallel universe were providing extra gravitational input. Versions of multiverse theory suggest that there is at least one other universe very close to our own, perhaps only a millimeter away. This makes it possible that some of the effects, especially gravity, "leak through," which could be responsible for the production of dark energy and dark matter that make up 96% of the universe.
"The multiverse is no longer a model, it is a consequence of our models," says Aurelien Barrau, particle physicist at CERN
While it hasn’t been proven yet, many highly respected and credible scientists are now saying there’s reason to believe that parallel dimensions could very well be more than figments of our imaginations.
"The idea of multiple universes is more than a fantastic invention—it appears naturally within several scientific theories, and deserves to be taken seriously," stated Aurelien Barrau, a French particle physicist at the European Organization for Nuclear Research (CERN).
There are a variety of competing theories based on the idea of parallel universes, but the most basic idea is that if the universe is infinite, then everything that could possibly occur has happened, is happening, or will happen.
According to quantum mechanics, nothing at the subatomic scale can really be said to exist until it is observed. Until then, particles occupy uncertain "superposition" states, in which they can have simultaneous "up" and "down" spins, or appear to be in different places at the same time. The mere act of observing somehow appears to "nail down" a particular state of reality. Scientists don’t yet have a perfect explanation for how it occurs, but that hasn’t changed the fact that the phenomenon does occur.
Unobserved particles are described by "wave functions" representing a set of multiple "probable" states. When an observer makes a measurement, the particle then settles down into one of these multiple options, which is somewhat how the multiple universe theory can be explained.
The existence of such a parallel universe "does not even assume speculative modern physics, merely that space is infinite and rather uniformly filled with matter as indicated by recent astronomical observations," Max Tegmark, a cosmologist at MIT in Boston, Massachusetts concluded in a study of parallel universes published by Cambridge University.
Mathematician Hugh Everett published landmark paper in 1957 while still a graduate student at Princeton University. In this paper he showed how quantum theory predicts that a single classical reality will gradually split into separate, but simultaneously existing realms.
"This is simply a way of trusting strictly the fundamental equations of quantum mechanics," says Barrau. "The worlds are not spatially separated, but exist as kinds of 'parallel' universes."
Partly because the idea is so uncomfortably strange, it’s dismissed as sci-fi by many critics. But there are also many credible, respected proponents of the theory—a group that is continuously gaining new adherents as new research unveils new evidence. Some Oxford research—for the first time—recently found a mathematical answer that sweeps away one of the key objections to the controversial idea. Their research shows that Everett was indeed on the right track when he came up with his multiverse theory. The Oxford team, led by Dr David Deutsch, showed mathematically that the bush-like branching structure created by the universe splitting into parallel versions of itself can explain the probabilistic nature of quantum outcomes.
But if parallel worlds do exist, there is a way around these troublesome paradoxes. Deutsch argues that time travel shifts happen between different branches of reality. The mathematical breakthrough bolsters his claim that quantum theory does not forbid time travel. "It does sidestep it. You go into another universe," he said. But he admits that there will be a lot of work to do before we can manipulate space-time in a way that makes “hops” possible. While it may sound fanciful, Deutsch says that scientific research is continually making the theory more believable.
"Many sci-fi authors suggested time travel paradoxes would be solved by parallel universes but in my work, that conclusion is deduced from quantum theory itself."
The borderline between physics and metaphysics is not defined by whether an entity can be observed, but whether it is testable, insists Tegmark.
He points to phenomena such as black holes, curved space, the slowing of time at high speeds, even a round Earth, which were all once rejected as scientific heresy before being proven through experimentation, even though some remain beyond the grasp of observation. It is likely, Tegmark concludes that multiverse models grounded in modern physics will eventually be empirically testable, predictive and disprovable
Source : http://www.forbiddenknowledgetv.com/videos/quantum-physics/escape-to-a-parallel-universemichio-kaku.html
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What I think about time travel and creation of Universe :
Time Travel is definitely possible today OR tomarrow, It is not a fiction.
As We move forward in time then certainly We can travel back in time also.
But problem arises with paradoxes : Do We change past ?
If concept of parallel Universe is correct as per quantum mechanics theory (A particle can have multiple states simultaneously), then We change history/past also.
We see each & every particles have its anti particle also : i.e Positive & Negative
for e.g. Electron -> Positron
For each matter, its Anti matter also present. So that it can be destroyed to release energy.
And on the same concept there may be Negative/Anti Universe can also possible.
In Hinduism, 1 Second of Brahma's is equivalent to more than 1000 years of human.
i.e Time moves with different different speeds in Universe.
We are still ignorant of Science/Creation of Universe. Nature is brilliant in its creation : Green Trees have green insects ( Are these insects use science to change there colours to protect themselves from other creatures).
How Creatures/Animals developed to there survival and how there destroyer developed skills to kill such creatures/animals. ( Do they use science OR there is some thinking power for there development, We don't know, And We are thinking of Lemark's OR Darwin's principle, And it is unlear how each/every creature developed in such a way to change even colour, eyes, flying, othere special possibilities).
We are asking - If God created this universe, then from Where God comes.
But there is one more question : How this matter & energy is created. How Big bang comes, And what happend before Big Bang.Do We ceated from ZERO (And Positive & Negative energy creates, But How & Why it creates)
There is one more possibility, May be there is some advanced civilization who now so advance that they works like GOD.
And may be We can achieve such stage in future.
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As We are editing video films/ photo (Which is a past event) , One day human being may go to past/future
(For e.g. Light of thousand years far star reaches us after thousands of years, And that time We see past of that star, While observer on that star is in future of that star.)
, And can rereate same things once again.
( I have firm beleive on this, And I hope it can't be disprove).
Each and every particle absorbes/release energy at each & every moment when the event happens. And When We are able to decode this particle energy then We can create picture of past event happened.
And on the basis of that We can recreate the same.
IMPOSSIBLE = I M POSSIBLE
Each & every thing is possible with a positive direction/ positive energy.
Negative people can't find a solution.
I am saluting Mr. Ronald Mellat for his brave effort to try to bring his father back, And giving us many valuable information.
I am saluting to the scientists, Who gives us so many things and a great platform to futhur developments.
I felt now new developments can be fastly possible through Internet, which can works like a water at the time of origin of universe through which many species combined to create complicated species.
I hate terrorists, Who don't know what is the value of a life, Don't know the purpose/meaning of there objectives.
World's all religion should think & work in a Unified approach.
