Particle that travels faster than light!!
Tachyon:
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When we are in schools and colleges, we are often taught that light is the faster moving element that travels at the rate of 3,00,000 km/s, but when we grow up the question arises in our mind that "Is there any particle or any kind of thing exists that travels faster than light and move back in time?"."Is there any scientific reasons available to think they really even exist?"Hmm,quite Interesting! Isn't it?
Why I mention above that travels faster than light and move back in time?Because when any particle travels faster than light it breaks the barrier of space and time.It is supposed to prove all the space and time related theories wrong.It challenges Einstein's special theory of relativity.This is the reason which shows us that near a Black hole time passes very slowly.If any astronaut passed through the Black hole and returned successfully to planet Earth then he saw her daughter as an old woman but his age just passes a year.Strange but theoretically proved.Seriously I am not going to talk about "The Flash" favorite superhuman runs faster than light also travels through past,present and future.Just joking.
Raymond Y. Chiao,the professor of Physics at the University of California,Berkeley replied that Tachyons are theoretically postulated particles that travels faster than light and have imaginary masses.Here the concept of 'Imaginary Masses" takes place that comes from the square root of the negative numbers i.e. the mass can't be measurable,only imaginable.Roughly speaking the particle's mass is physically meaningful at the speeds greater than light.
"The name 'tachyon' (Greek word 'tachys' means swift) was coined by the late Gerald Feinberg of Columbia University. Tachyons have never been found in experiments as real particles travelling through the vacuum, but we predict theoretically that tachyon-like objects exist as faster-than-light 'quasiparticles' moving through laser-like media. (That is, they exist as particle-like excitations, similar to other quasi particles called phonons and polaritons that are found in solids. 'Laser-like media' is a technical term referring to those media that have inverted atomic populations, the conditions prevailing inside a laser.)
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| Tachyon |
Raymond Y. Chiao,the professor of Physics at the University of California,Berkeley replied that Tachyons are theoretically postulated particles that travels faster than light and have imaginary masses.Here the concept of 'Imaginary Masses" takes place that comes from the square root of the negative numbers i.e. the mass can't be measurable,only imaginable.Roughly speaking the particle's mass is physically meaningful at the speeds greater than light.
"The name 'tachyon' (Greek word 'tachys' means swift) was coined by the late Gerald Feinberg of Columbia University. Tachyons have never been found in experiments as real particles travelling through the vacuum, but we predict theoretically that tachyon-like objects exist as faster-than-light 'quasiparticles' moving through laser-like media. (That is, they exist as particle-like excitations, similar to other quasi particles called phonons and polaritons that are found in solids. 'Laser-like media' is a technical term referring to those media that have inverted atomic populations, the conditions prevailing inside a laser.)
"We are beginning an experiment at Berkeley to detect tachyon-like quasi particles. There are strong scientific reasons to believe that such quasi particles really exist, because Maxwell's equations, when coupled to inverted atomic media, lead inexorably to tachyon-like solutions.
"Quantum optical effects can produce a different kind of 'faster than light' effect (see "Faster than light?" by R. Y. Chiao, P. G. Kwiat, and A. M. Steinberg in Scientific American, August 1993). There are actually two different kinds of 'faster-than-light' effects that we have found in quantum optics experiments. (The tachyon-like quasiparticle in inverted media described above is yet a third kind of faster-than-light effect.)
"First, we have discovered that photons which tunnel through a quantum barrier can apparently travel faster than light (see "Measurement of the Single-Photon Tunneling Time" by A. M. Steinberg, P. G. Kwiat, and R. Y. Chiao, Physical Review Letters, Vol. 71, page 708; 1993). Because of the uncertainty principle, the photon has a small but very real chance of appearing suddenly on the far side of the barrier, through a quantum effect (the 'tunnel effect') which would seem impossible according to classical physics. The tunnel effect is so fast that it seems to occur faster than light.
"Second, we have found an effect related to the famous Einstein-Podolsky-Rosen phenomenon, in which two distantly separated photons can apparently influence one anothers' behaviours at two distantly separated detectors (see "High-Visibility Interference in a Bell-Inequality Experiment for Energy and Time," by P. G. Kwiat, A. M. Steinberg, and R. Y. Chiao, Physical Review A, Vol. 47, page R2472; 1993). This effect was first predicted theoretically by Prof. J. D. Franson of Johns Hopkins University. We have found experimentally that twin photons emitted from a common source (a down-conversion crystal) behave in a correlated fashion when they arrive at two distant interferometers.
This phenomenon can be described as a 'faster-than-light influence' of one photon upon its twin. Because of the intrinsic randomness of quantum phenomena, however, one cannot control whether a given photon tunnels or not, nor can one control whether a given photon is transmitted or not at the final beam splitter. Hence it is impossible to send true signals in faster-than-light communications.
Hope you enjoyed reading this article.Thank You.
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