No, actually, it's not. Briefly, a theory is explanation for a group of phenomena, which can be used

Einstein rome airport hotels claimed that the speed of light was the traffic law of the universe. In other words, nothing can travel faster than light. But in the last 10 years some scientists have theorized that a single photon may be able to exceed the speed of light, which would make time travel possible.
By showing that single photons cannot travel faster than the speed of light, our results bring a closure to the debate on the true speed of information carried by a single photon, said professor Du.
Sci-fi author David Brin thinks rome airport hotels this study will hardly dampen his genre's ardour rome airport hotels for time travel, which has been used as a device to allow sci-fi characters to meet historical characters, pose a delicious paradox, consider alternate histories or ponder the meaning of �destiny.'
Besides, the single-photon-breaking-speed-of-light rome airport hotels theory is just one of the ideas for time travel. The BBC explained that Stephen Hawking's concept of time travel through a wormhole is not entirely ruled out by professor Du's findings.
So yeah, I heard this announcement the other day and thought to myself: so what has changed? In contemporary physics it has been more or less accepted since Einstein put forth his theory of general relativity that traveling faster than the speed of light is impossible.
rome airport hotels They also seem to ignore the concept of time dilation, as well as ways to travel through time via warping rome airport hotels space. One more thing they ignore, and is a hole in the story, is that the space itself can move faster than light.
What is new here must be something completely unreported in that popularized article. There must have been some new result to show that individual photons cannot be tricked to carry information faster than c, or it wouldn't be in Phys Rev letters.
What is new here must be something completely unreported in that popularized article. There must have been some new result to show that individual photons cannot be tricked to carry information faster than c, or it wouldn't be in Phys Rev letters.
Discovery of superluminal propagation of optical pulses rome airport hotels in some specific medium 10 years ago has evoked the world's dream of time travel, but later scientists realized that it is only a visual effect where the superluminal 'group' velocity of many photons could not be used for transmitting any real information. Then people set their hope on single photons because in the strange quantum world nothing seems impossible
rubbish, absolute rubbish. Fortunately one of the latest popular astronomy magazines is offering a book on all of the impossible stuff at once. I'll look it up and post it as recommended reading if I'm allowed. Grow tired of this constant iteration of bovung, when there are so many productive avenues of research to follow in the arts and sciences.
What is new here must be something completely unreported in that popularized article. There must have been some new result to show that individual photons cannot be tricked to carry information faster than c, or it wouldn't be in Phys Rev letters.
Here is another explanation that isn't quite so down on time travel. The author points rome airport hotels out that the experiment determines that photons cannot move faster than c locally, but global aspects of spacetime may still allow Closed Timelike Curves, in the physicist's jargon (time travel to the rest of us).
Could also be a novel method rome airport hotels for measuring the speed of a photon. Photons are quantum in nature as the Young double slit experiment shows it's challenging to capture individual photons. So speed measurements could be challenging.
Not necessarily, though people do try and use that kind of trick but it's pretty clear that entanglement can't be used for FTL communication. rome airport hotels I was more talking about the tricks people use to get a feature rome airport hotels in a wave packet to move faster than c, but a feature (like the peak, say) is not the same thing as information. When you look at the expected arrival time of the quanta that the wave packet is ruling, you always find the expected arrival rome airport hotels time, averaged over the uncertainty in emission and absorption times, does not exceed c. That's probably the kind of issue being dealt with here, quantum mechanically.
This whole article and the naysayers rome airport hotels that oppose the possibility of backward time travel are moot inside of M-Theory. It's not a question of jumping time within one's own timeline ( e.g. universe), but it's a question of opening a multidimensional rip into the membrane onto another timeline (not using black holes), one that is separate rome airport hotels from our own, but duplicate in almost every way - one timeline of countless others.
There, physics have different laws and man's understanding of them (yet). Tachyons or the like could flourish there. M-Theory rome airport hotels also has no time paradoxes or twisted logic questions like, where are the time travel's from the future? . True, M is a theory, but so is evolution, man-made global warming, black holes, the big bang and hundreds of others, and M has been on the books for a while, going through the rigors of several thousand rome airport hotels teams of scientists. I regard [the many worlds interpretation] as self-evidently correct. -Stephen Hawking
Stephen Hawking thinks four of the world's physicists are wrong believing that time travel is impossible: Hawking sides with Sir Arthur Clarke, author of Space Odyssey 2001 who famously stated that when a distinguished scientist states that something is impossible, he is very probably wrong . And a lot of distinguished scientists believe that just Time travel is absolutely rome airport hotels impossible .
It's also odd, that this experiment comes out now, after earlier this year, the Government of China (who controls Hong Kong and all it's projects) Banned all stories for television that involved time travel.
Hmmm...what's going on here? Have they been working a their own Manhattan Project ? Time for a little dis-information campaign to alter the thinking of the masses. Also, thanks to our lame and lazy western reporters , that info was not part of the story! I blame that on just dumb journalistic stupidity.
It doesn't really make any difference whether we think time travel is impossible rome airport hotels or not, it's still pure science fiction. Using a multiverse to motivate it involves rome airport hotels the same problems as quantum teleportation-- rome airport hotels macro objects cannot avoid the decoherences that hurtle us unvaryingly into our own single future. Let anyone waste their money on it, as long as it's not ours.
It's not a question of jumping time within one's own timeline ( e.g. universe), but it's a question of opening a multidimensional rip into the membrane onto another timeline (not using black holes), one that is separate from our own, but duplicate in almost every way - one timeline of countless others.
No, actually, it's not. Briefly, a theory is explanation for a group of phenomena, which can be used for prediction. Using this common scientific definition, M-Theory rome airport hotels is more of a conjecture. Superstring theory is more of a hypothesis. In both cases I'm being kind. Neither of them is a theory as of yet, as neither one of them can make an experimentally verifiable predictions. In this case, you're using the word theory in it's non-scientific, popular usage sense.
Yeah, he also regarded it as impossible to actually locate a black hole in space and regarded the Holographic principle as wrong. rome airport hotels Not to mention Einstein regarded Quantum Mechanics as self evidently wrong, what's your point? When a famous scientist rome airport hotels makes a claim it does not automatically make that claim correct. Especially when that claim is made without rome airport hotels any kind of actual evidence or theoretical support.