If a time traveler back to the past, combined with its destruction between grandparents, then he would not have been born yet? This is the classic "grandfather paradox" core issue "grandfather paradox" were often used to demonstrate the existence of time travel is impossible, but some scientists not think so.
According to the British "Daily Mail" Web site June 24 (Beijing time) reported that scientists at the University of Queensland in Australia for the first time using two light quanta (photons) to simulate the quantum particle to travel through time and their "movements" were Research results show that, at least on the quantum scale, time travel can be achieved. Research published in "Nature Communications" magazine latest issue.
The scientists used to simulate photon quantum particle back to the past and their behavior was studied. In the experiment, they were two results of a time-traveling photons that might arise were studied. The first result is: "No. 1 photon" through the wormhole into the past and interact with before himself. The second result is: "No. 2 photons" will be traveling at a normal time and space, but through the wormhole time travel with a card in the ring - when closed Curve (CTC, particles of matter in space-time is one of the world line photon interaction, which is a "closed", that will return the starting point) inside. Analog "2-photon" behavior so that the "No. 1 photon" behavior can also be studied. The results show that the time travel on the quantum scale can be achieved.
The main author of the study, PhD School of Mathematics and Physics Martin Rui Baer said: "The problem is that time travel explain the basic operating principles of the stars, galaxies and other large-scale world of Einstein's general theory of relativity and description atoms, molecules and other small-scale World operating principle of quantum mechanics, the two most successful but most are not compatible with the junction of the theory. "
Einstein's theory holds, perhaps through a space-time channel, back to the starting point in time earlier space, but this possibility so that physicists and philosophers were confounded, because that seems to lead to some perverse theory, such as the classic "grandfather paradox."
Timothy Ralph University of Queensland, said in 1991, scientists predict, the occurrence of the quantum world time travel might avoid these paradoxes. Ralph said: "The properties of a quantum particle vague and uncertain, which may give them enough swing space, to avoid inconsistencies in the time travel environment."
Scientists say that, although the same can prove whether simulate larger particles (such as atoms) or a group of particles may be time travel is still unknown, but the latest research will help them better understand between quantum mechanics and general relativity theory interrelated.
Einstein's theory of relativity does not deny time and space through - quality caused by two curved space-time, if the intersection at one point, to give birth to a "wormhole", from which we cross to seven million years ago, the Andromeda nebula, not impossible - - but the "wormhole" is only hypothetical, provided that general relativity is correct. Our world has time traveler do? Some scientists have written software to search for signs of "coming off" exists on the network, it has not been found. A few years ago scientists also do experiments with photons, it carries the information to change their past, it failed. It seems that a lot of fantasy seems to only stay in the novel. But scientists will not let go through the topic, it is at least a very fun thinking games.
The entire contents of a user on Baidu know daily newspaper published a third party is strictly prohibited reproduced. Any third party to use the content, you must contact Baidu know daily zhidaoribao@baidu.com, obtain written authorization to use the content and in the manner prescribed.
Article Source: Baidu know daily (http://zhidao.baidu.com/daily)
Original link: http: //zhidao.baidu.com/daily/view id = 401?