A pair of identical particles swapping places sounds like a small move. In quantum physics, it is a defining one.

I keep coming back to a strange idea: what if everything we know about quantum physics is already encoded inside a single atom? Not in a mystical sense, but in the very real way that one tiny system ...

The word “ atom ” is from the Greek word atomos, which means “uncuttable”. This is the smallest particle in the universe that ...