97 citations · 463 across the 17 of their papers we have counts for
18 papers
Doublon-holon pair creation in Mott-Hubbard systems in analogy to QED
Friedemann Queisser, Konstantin Krutitsky, Patrick Navez +1
Via the hierarchy of correlations, we study doublon-holon pair creation in the Mott state of the Fermi-Hubbard model induced by a time-dependent electric field. Special emphasis is…
Optical lattices as a tool to study defect-induced superfluidity
Grigory E. Astrakharchik, Konstantin V. Krutitsky, Maciej Lewenstein +2
We study the superfluid response, the energetic and structural properties of a one-dimensional ultracold Bose gas in an optical lattice of arbitrary strength. We use the Bose-Fermi…
Avalanche of entanglement and correlations at quantum phase transitions
Konstantin V. Krutitsky, Andreas Osterloh, Ralf Schützhold
We study the ground-state entanglement in the quantum Ising model with nearest neighbor ferromagnetic coupling and find a sequential increase of entanglement depth with growing…
One-dimensional Bose gas in optical lattices of arbitrary strength
Grigory E. Astrakharchik, Konstantin V. Krutitsky, Maciej Lewenstein +1
One-dimensional Bose gas with contact interaction in optical lattices at zero temperature is investigated by means of the exact diffusion Monte Carlo algorithm. The results obtaine…
Ultracold bosons with short-range interaction in regular optical lattices
K. V. Krutitsky
During the last decade, many exciting phenomena have been experimentally observed and theoretically predicted for ultracold atoms in optical lattices. This paper reviews these rapi…
Propagation of quantum correlations after a quench in the Mott-insulator regime of the Bose-Hubbard model
K. V. Krutitsky, P. Navez, F. Queisser +1
We study a quantum quench in the Bose-Hubbard model where the tunneling rate is suddenly switched from zero to a finite value in the Mott regime. In order to solve the many-bod…