String patterns in the doped Hubbard model
Abstract
One of the simplest models of interacting fermions on a two-dimensional (2D) lattice—the Hubbard model—becomes too tricky to simulate on classical computers as the density of empty lattice sites (holes) increases. Chiu et al. used a quantum microscope to take snapshots of thousands of realizations of the 2D Hubbard model in an optical lattice filled with fermionic lithium atoms at varying hole densities (see the Perspective by Schauss). The authors used pattern recognition algorithms to analyze the images, in which each lattice site was individually resolved. Comparing these patterns to the predictions of several theoretical models, they found the most consistency with the so-called geometric string model.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jul 19, 2019
- Source ID
- 10.1126/science.aav3587
Entities
People
- Annabelle Bohrdt
- Christie S Chiu
- Daniel Greif
- Eugene A. Demler
- Fabian Grusdt
- Geoffrey Ji
- Markus Greiner
- Michael Knap
- Muqing Xu
Organizations
- Air Force Office of Scientific Research
- European Commission
- German National Academic Foundation
- German Research Foundation
- Gordon and Betty Moore Foundation
- Harvard University
- Munich Center for Quantum Science and Technology
- National Science Foundation
- Office of Naval Research
- Swiss National Science Foundation
- Technical University of Munich
- United States Department of Defense