82 citations · 575 across the 33 of their papers we have counts for
21 papers · 1 filter
Light-driven octupolar inverse Faraday effect and multipolar order in Mott insulators
Saikat Banerjee, Tara Steinhöfel, Florian Lange +2
Hidden multipolar orders in spin-orbit-coupled Mott insulators provide a promising setting for correlated quantum matter, yet their control and detection remain major challenges. H…
Decay of spin helices in XXZ quantum spin chains with single-ion anisotropy
Florian Lange, Frank Göhmann, Gerhard Wellein +1
Long-lived spin-helix states facilitate the study of non-equilibrium dynamics in quantum magnets. We consider the decay of transverse spin-helices in antiferromagnetic spin- XXZ…
Metal-insulator transition of spinless fermions coupled to dispersive optical bosons
Florian Lange, Holger Fehske
Including the previously ignored dispersion of phonons we revisit the metal-insulator transition problem in one-dimensional electron-phonon systems on the basis of a modified spinl…
Charge-order melting in the one-dimensional Edwards model
Florian Lange, Gerhard Wellein, Holger Fehske
We use infinite matrix-product-state techniques to study the time evolution of the charge-density-wave (CDW) order after a quench or a light pulse in a fundamental fermion-boson mo…
Photoinduced metallization of excitonic insulators
Satoshi Ejima, Florian Lange, Holger Fehske
Utilizing the time-dependent density-matrix renormalization group technique, we numerically prove photoinduced pairing states in the extended Falicov-Kimball model (EFKM) at half f…
Nonequilibrium dynamics in pumped Mott insulators
Satoshi Ejima, Florian Lange, Holger Fehske
We use time-evolution techniques for (infinite) matrix-product-states to calculate, directly in the thermodynamic limit, the time-dependent photoemission spectra and dynamic struct…
Quantum criticality in dimerised anisotropic spin-1 chains
Satoshi Ejima, Florian Lange, Holger Fehske
Applying the (infinite) density-matrix renormalisation group technique, we explore the effect of an explicit dimerisation on the ground-state phase diagram of the spin-1 chai…
Finite-temperature photoemission in the extended Falicov-Kimball model: a case study for TaNiSe
Satoshi Ejima, Florian Lange, Holger Fehske
Utilizing the unbiased time-dependent density-matrix renormalization group technique, we examine the photoemission spectra in the extended Falicov-Kimball model at zero and finite…
Photoinduced -pairing at finite temperatures
Satoshi Ejima, Tatsuya Kaneko, Florian Lange +2
We numerically prove photoinduced -pairing in a half-filled fermionic Hubbard chain at both zero and finite temperature. The result, obtained by combining the matrix-product-sta…
Photoinduced -pairing in One-dimensional Mott Insulators
Satoshi Ejima, Tatsuya Kaneko, Florian Lange +2
Employing the density-matrix renormalization group technique in the matrix-product-state representation, we investigate the photoexcited superconducting correlations induced by the…
Block-Lanczos density-matrix renormalization-group approach to spin transport in Heisenberg chains coupled to leads
F. Lange, S. Ejima, T. Shirakawa +2
We adapt the block-Lanczos density-matrix renormalization-group technique to study the spin transport in a spin chain coupled to two non-interacting fermionic leads. As an example,…
Driving XXZ spin chains: Magnetic-field and boundary effects
Florian Lange, Satoshi Ejima, Holger Fehske
Using the time-evolving block decimation, we study the spin transport through spin-1/2 and spin-1 XXZ chains subjected to an external magnetic field and contacted to noninteracting…
Exotic criticality in the dimerized spin-1 chain with single-ion anisotropy
Satoshi Ejima, Tomoki Yamaguchi, Fabian H. L. Essler +3
We consider the dimerized spin-1 chain with single-ion anisotropy . In absence of an explicit dimerization there are three phases: a large-, an antiferromagnetically or…
Spin transport through a spin-1/2 XXZ chain contacted to fermionic leads
Florian Lange, Satoshi Ejima, Tomonori Shirakawa +2
We employ matrix-product state techniques to numerically study the zero-temperature spin transport in a finite spin-1/2 XXZ chain coupled to fermionic leads with a spin bias voltag…
Finite-temperature dynamic structure factor of the spin-1 XXZ chain with single-ion anisotropy
Florian Lange, Satoshi Ejima, Holger Fehske
Improving matrix-product state techniques based on the purification of the density matrix, we are able to accurately calculate the finite-temperature dynamic response of the infini…
Time-dependent generalized Gibbs ensembles in open quantum systems
Florian Lange, Zala Lenarčič, Achim Rosch
Generalized Gibbs ensembles have been used as powerful tools to describe the steady state of integrable many-particle quantum systems after a sudden change of the Hamiltonian. Here…
Critical behavior of the extended Hubbard model with bond dimerization
Satoshi Ejima, Florian Lange, Fabian H. L. Essler +1
Exploiting the matrix-product-state based density-matrix renormalization group (DMRG) technique we study the one-dimensional extended (-) Hubbard model with explicit bond dim…
Perturbative approach to weakly driven many-particle systems in the presence of approximate conservation laws
Zala Lenarčič, Florian Lange, Achim Rosch
We develop a Liouville perturbation theory for weakly driven and weakly open quantum systems in situations when the unperturbed system has a number of conservations laws. If the pe…
Pumping approximately integrable systems
Florian Lange, Zala Lenarčič, Achim Rosch
Weak perturbations can drive an interacting many-particle system far from its initial equilibrium state if one is able to pump into degrees of freedom approximately protected by co…
Ising tricriticality in the extended Hubbard model with bond dimerization
Satoshi Ejima, Fabian H. L. Essler, Florian Lange +1
We explore the quantum phase transition between Peierls and charge-density-wave insulating states in the one-dimensional, half-filled, extended Hubbard model with explicit bond dim…
Criticality at the Haldane-insulator charge-density-wave quantum phase transition
Florian Lange, Satoshi Ejima, Holger Fehske
Exploiting the entanglement concept within a matrix-product-state based infinite density-matrix renormalization group approach, we show that the spin-density-wave and bond-order-wa…