Shivaji Sondhi

Robbert Dijkgraaf, who served as IAS Director and Leon Levy Professor from 2012–22, has been elected as a fellow of the Royal Society, alongside Shivaji Sondhi, Member (1998) in the School of Natural Sciences, and Jacob Tsimerman, incoming Distinguished Visiting Professor (2025–26) in the School of Mathematics. 

Time crystals are hypothetical structures that pulse without requiring any energy—like a ticking clock that never needs winding. The pattern repeats in time in much the same way that the atoms of a crystal repeat in space. The idea was so...