The details of how the CPT-symmetric universe leads to a 480 PeV neutrino are tricky — so tricky, Learned said, that few physicists beyond Boyle and his team understand them at all.

In the CPT-symmetric model, time and space flow continuously across the big bang, and the antiuniverse that emerges in the ...

But in a CPT-symmetric universe, no such waves should exist. So if those searches for primordial gravitational waves turn up empty, that might be a clue that this CPT-mirror universe model is correct.

Turok, however, points out a fly in the ointment – which is that the CPT symmetric model requires these neutrinos to be completely stable. But he remains cautiously optimistic. “It is possible to make ...

Seeing the universe as an object in itself, instead of a mashup of different forces and fields that each have their own interactions, gives it an anti-universe under CPT symmetry.

"O" is symmetric about any line that you draw, as well as rotational symmetry: ... (C, P, and T) symmetries behaves the same as the particle in our Universe, then CPT symmetry is conserved.

According to the researchers, the doppelganger anti-universe would potentially have neutrinos in it that were the CPT-symmetric opposite of our universe’s.

One such hypothesis, published in a paper in response to the findings, suggested the possibility of a "CPT symmetric universe," where time might flow in the opposite direction to ours.

The details of how the CPT-symmetric universe leads to a 480 PeV neutrino are tricky — so tricky, Learned said, that few physicists beyond Boyle and his team understand them at all.

The details of how the CPT-symmetric universe leads to a 480 PeV neutrino are tricky — so tricky, Learned said, that few physicists beyond Boyle and his team understand them at all.