Angående ljushastigheten

Det går att åka snabbare än ljuset! Kanske. I varje fall om man får tro några italienska forskare. Och om det nu är så att de italienska forskarna har hittat partiklar som färdas snabbare än ljuset, så finns det möjliga förklaringar. Förklaringar som inte nödvändigtvis måste förstöra för vår nuvarande förståelse för hur universum fungerar.

If the measurements are shown to be correct, physicists will have to modify their understanding of special relativity to take the results into account. Fortunately, there are several theories that could help explain the Italian team’s results by showing how neutrinos might appear to travel faster than the speed of light when, in reality, that is not the case.

Heinrich Paes at Dortmund University and colleagues believe it might be possible for neutrinos to move through hidden, extra dimensions of space and effectively take shortcuts through space-time. ”The extra dimension is warped in a way that particles moving through it can travel faster than particles that go through the known three dimensions of space. It’s like a shortcut through this extra dimension. So it looks like particles are going faster than light, but actually they don’t.”

Another potential explanation for the observation was given by Alan Kostelecky at Indiana University, who has devoted his career to violations of the limiting speed of light. He proposed in 1985 that an energy field that lies unseen in the vacuum might explain the finding. The field allows neutrinos to move faster through space than photons, the particles that make up light.

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