Regensburg 2019 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 44: Correlated Electrons: Method Development
TT 44.10: Vortrag
Mittwoch, 3. April 2019, 17:30–17:45, H7
Tensor network algorithms for simulating real quantum materials — •Augustine Kshetrimayum1, Matteo Rizzi2, Roman Orus3, Bella Lake4, and Jens Eisert1 — 1Dahlem Center for Complex Quantum Systems, Physics Department, Freie Universität Berlin, 14195 Berlin, Germany — 2Institute of Physics, Johannes Gutenberg University, 55099 Mainz, Germany — 3Donostia International Physics Center, Paseo Manuel de Lardizabal 4, E-20018 San Sebastián, Spain — 4Helmholtz-Zentrum Berlin für Materialien und Energie, 14109 Berlin, Germany
In this talk, I will present some results on how tensor network algorithms can be used to simulate real quantum materials. In particular, I will first talk about how PEPS can be used to simulate two-dimensional thermal states based on an annealing mechanism. I will give the examples of the Ising and the Bose Hubbard model on a square lattice. In the second part, I will discuss about the material Ca10Cr7O28 that was recently discovered in the lab to be a quantum spin liquid. We study this material using a variant of PEPS known as the Projected Entangled Simplex State. We show that our numerical results nicely fit with the previously obtained experimental results.