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TheQuestionGuy14
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Tachyons are hypothetical particles which travel faster than light and some scientists say they have real mass. They violate relativity and causality, are they possible or are they seen as impossible?
TheQuestionGuy14 said:some scientists say
Vanadium 50 said:Who?
Wikipedia has references. Why not chase the references and give us the names listed there?TheQuestionGuy14 said:It is stated on the Wikipedia that modern Tachyon theories use real mass instead of imaginary, and some scientists use real mass, no names are given
jbriggs444 said:Wikipedia has references. Why not chase the references and give us the names listed there?
Surely you can do better than that. Cite the passage referenced and cite the three references that appear as superscripts on that passage.TheQuestionGuy14 said:
jbriggs444 said:Surely you can do better than that. Cite the passage referenced and cite the three references that appear as superscripts on that passage.
Please look especially at section 10 and later in reference 8. You have to change special relativity to accommodate nonimaginary mass tachyons. Then, no better answer can be given beyond what Ibix provided in #5. Even more briefly:TheQuestionGuy14 said:Reference 7: Is written in French and must be bought to read
Reference 8: https://arxiv.org/abs/1112.4187
Reference 9: http://rspa.royalsocietypublishing.org/content/468/2148/4174
But, I just want to know whether these particles can exist in the first place.
That argument forbids a mechanical process that starts with a massive object moving at less than the speed of light and accelerates the object to the speed of light. It does not forbid the creation of particles already moving faster than light.Deepblu said:Leave causality aside for a moment..any object with mass needs infinite energy to move at speed of light, so the answer is: no it is impossible.
I see.. so "creation" of particle with mass at exactly the speed of light is impossible, bypassing the speed of light makes it possible!jbriggs444 said:That argument forbids a mechanical process that starts with a massive object moving at less than the speed of light and accelerates the object to the speed of light. It does not forbid the creation of particles already moving faster than light.
Within SR, a tachyon will have imaginary mass, but positive energy. There are SR violating theories of positive mass tachyons, see references earlier in this thread. These theories try to match all known tests of SR. I suspect the number of physicists who think this has anything to do with reality is rather smallDeepblu said:I see.. so "creation" of particle with mass at exactly the speed of light is impossible, bypassing the speed of light makes it possible!
But the particle will have negative relativistic mass which makes it non-physical particle, maybe just a mathematical one.
Tachyons are hypothetical particles that are theorized to travel faster than the speed of light. They were first proposed by physicist Arnold Sommerfeld in 1904 and later studied by physicist Gerald Feinberg in the 1960s. However, there is currently no experimental evidence for the existence of tachyons.
Tachyons are considered to be particles that have imaginary mass and can only travel faster than the speed of light. This poses a challenge to the theory of relativity, which states that nothing can travel faster than the speed of light. Some physicists have proposed that tachyons could exist in a parallel universe or could be traveling backwards in time, which would not violate the theory of relativity.
As of now, there is no experimental evidence for the existence of tachyons and they have not been detected. This is because they are predicted to have imaginary mass and therefore, do not interact with normal matter and particles. Additionally, their high speed makes it difficult for us to detect them using current technology.
If tachyons do exist, it would challenge our current understanding of physics and the laws of the universe. It would also have implications for time travel and the concept of causality as tachyons traveling backwards in time could potentially create paradoxes. However, until their existence is proven, these implications remain purely theoretical.
While there is no experimental evidence for the existence of tachyons, some theoretical physicists are still exploring the possibility of their existence. They are studying the potential effects of tachyons on the laws of physics and continue to search for ways to detect them. However, until concrete evidence is found, tachyons remain a topic of speculation and theoretical research.