Bonn 2025 – wissenschaftliches Programm
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QI: Fachverband Quanteninformation
QI 33: Quantum Materials and Many-Body Systems
QI 33.6: Vortrag
Donnerstag, 13. März 2025, 15:45–16:00, HS VIII
Efficient optimization and conceptual barriers with projected entangled-pair states — •Erik Weerda1, Daniel Alcalde1,2, Konrad Schröder1, and Matteo Rizzi1,2 — 1University of Cologne, Cologne, Germany — 2Forschungszentrum Jülich
Finite projected entangled-pair states (PEPS) are becoming a widely used tool in the computational study of strongly correlated systems. However, no standard set of computational tools has yet emerged to exploit the power of this approach. In this work we investigate a promising approach to ground state search with PEPS based on sampling methods. Along with presenting strategies for more efficient optimisation, we also discuss conceptual barriers associated with this approach. A benchmark illustrates the power of these tools in the study of ground states of frustrated magnetic models.
Keywords: Projected entangled-pair states; Sampling