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180 papers
Dynamical correlation functions for the one-dimensional Bose-Hubbard insulator
Kevin zu Münster, Florian Gebhard, Satoshi Ejima +1
We calculate the dynamical current and kinetic-energy correlation functions for the first Mott lobe of the one-dimensional Bose-Hubbard model. We employ the strong-coupling expansi…
Algebraic Temporal Blocking for Sparse Iterative Solvers on Multi-Core CPUs
Christie Alappat, Jonas Thies, Georg Hager +2
Sparse linear iterative solvers are essential for many large-scale simulations. Much of the runtime of these solvers is often spent in the implicit evaluation of matrix polynomials…
Singular flat bands in the modified Haldane-Dice model
Alexander Filusch, Holger Fehske
Flat bands can be divided into singular and non-singular ones according to the behavior of their Bloch wave function around band-crossing points in momentum space. We analyze the f…
Photoinduced pairing in Mott insulators
Satoshi Ejima, Holger Fehske
Utilizing time-evolution techniques in (infinite) matrix-product-state representation, we study the non-equilibrium dynamics of driven Mott insulators and demonstrate photoinduced…
Quantized charge transport in disordered Floquet topological insulators in the absence of Anderson localization
Lennard Berg, Andreas Alvermann, Holger Fehske
We perform a numerical study of Floquet topological insulators with temporal disorder to investigate the existence of quantized charge transport without Anderson localization. We f…
Tunable valley filtering in dynamically strained - lattices
Alexander Filusch, Holger Fehske
Mechanical deformations in - lattices induce local pseudomagnetic fields of opposite directionality for different valleys. When this strain is equipped with a dyn…