- #1

limarodessa

- 51

- 0

My question:

I have read:

Topological Insulators: Dirac Equation in Condensed Matters

...momenta.A topological insulator preserves time reversal symmetry. Due to the Kramers...

But also I have read:

Observation of a Discrete Time Crystal

...breaking of translation symmetry in time and the emergence of a "time crystal"...

Is it different situations ?