Year: 2024
Type: article
Abstract: A one-dimensional Bose-Einstein condensate's superfluid state is surprisingly robust if the atoms are trapped in a quasiperiodic lattice. By Charles Day ABose-Einstein condensate of cold atoms occupying a periodic lattice can flow like a superfluid.But if the atoms' mutual repulsion is strengthened and the lattice potential deepened, the atoms can become immobilized in a state known as a Mott insulator.Now Hepeng Yao of the University of Geneva and his collaborators have examined the Mott transition of cold atoms trapped in a lattice that is quasiperiodic rather than periodic [1].Given that quasiperiodicity and other kinds of disorder tend to trap particles, the researchers were surprised to discover that their quasiperiodic lattice sustained the superfluid state rather than weakening it.
Source: Physics
Author: Charles Day
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W4403715461