symmetry

"That means electrons themselves help each other pair up, forming a superconducting state with special symmetry."

Graphene has long been a promising candidate for HHG research, but its perfect symmetry restricts it to producing only odd harmonics -- frequencies that are odd multiples of the original light source.

If future studies confirm the normal ordering, scientists will still need more data to clarify whether CP symmetry is broken.

This observation conflicts with expectations from the Standard Model, suggesting that additional sources of fundamental symmetry violation are needed to account for the scarcity of antimatter.

The most appropriate message from Fed officials in December could be one of agnostic symmetry: Going forward, we could stay here, we could raise, we could cut, depending on how plausible scenarios may play out.