Central to it all are Rydberg atoms, which have a single outer valence electron that can be excited to higher quantum states. They’re the big daddies of the atomic world. Typically an atomic nucleus ...

Whilst Coulomb's Law and the Bohr radius can describe the Rydberg formula for hydrogen, giving the normal hydrogen spectral lines, the spin-state transition of the 21cm line is a lot harder to ...

A research team has observed multibody interaction-induced EPs and hysteresis trajectories in cold Rydberg atomic gases. They ...

These Rydberg atoms have grown in size a thousand times compared to typical atoms. As the charge of the ion deforms the Rydberg atom in a very specific way, the bond between the two particles emerges.

Researchers at Tsinghua University recently observed a dissipative time crystal in a strongly interacting Rydberg gas at room temperature. Their paper, published in Nature Physics, opens new ...