In a fascinating twist of theoretical physics, scientists may have calculated how an elusive particle, the tachyon, could exist without breaking the laws of general relativity. Theoretical models ...

These theoretical particles ignore the basic structure of cause and effect. If scientists ever prove they’re real, tachyons would shatter our understanding of reality. But relativity also tells us ...

A straightforward math tweak could bring tachyon fields into line with the rest of physics. Tachyons are faster-than-light particles, and tachyon fields are special cases of quantum field. The math ...