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  1. Tachyon - Wikipedia

    But we now know that a tachyon indicates an instability in a theory that contains it. Regrettably, for science fiction fans, tachyons are not real physical particles that appear in nature.

  2. Tachyon | Faster-Than-Light, Quantum Mechanics, Particles | Britannica

    Dec 26, 2025 · Just as an ordinary particle such as an electron can exist only at speeds less than that of light, so a tachyon could exist only at speeds above that of light, at which point its mass would be …

  3. Physicists suggest tachyons can be reconciled with the special theory ...

    Jul 11, 2024 · Once this fact was incorporated into the theory, all the difficulties mentioned earlier completely disappeared and tachyon theory became mathematically consistent.

  4. Do tachyons exist? - Department of Mathematics

    Tachyon is the name given to the supposed "fast particle" which would move with v > c. Tachyons were first introduced into physics by Gerald Feinberg, in his seminal paper "On the possibility of faster …

  5. Faster Than a Speeding Photon: How Tachyons Challenge Modern …

    Jul 30, 2024 · Recent advancements in tachyon theory have addressed past inconsistencies by incorporating both past and future states into the boundary conditions, leading to a new quantum …

  6. Tachyon -- from Eric Weisstein's World of Physics - Wolfram

    The word tachyon derives from the Greek (tachus), meaning "speedy." Tachyons have the strange properties that, when they lose energy, they gain speed. Consequently, when tachyons gain energy, …

  7. Tachyon in Physics: Discovery, Properties & Causality Explained

    A tachyon is a hypothetical particle that always travels faster than the speed of light (c). Unlike ordinary matter (called bradyons), which must always travel slower than c, tachyons are postulated to have a …

  8. Tachyons and Their Implications for Causality and Spacetime

    Aug 9, 2024 · The term “tachyon” comes from the Greek word “tachys,” meaning swift or fast. These particles are intriguing because they challenge our conventional understanding of physics, …

  9. Tachyon - Wikiwand

    A tachyon or tachyonic particle is a hypothetical particle that always travels faster than light. Physicists posit that faster-than-light particles cannot exist...

  10. tachyon | Encyclopedia.com

    tachyon (tăk´ēŏn´), hypothetical elementary particle that travels only at speeds exceeding that of light. According to the theory of relativity, the speed of light is the limiting velocity for all ordinary material …