Density-matrix renormalization group study of the incommensurate quantum Frenkel-Kontorova model
Density-matrix renormalization group study of the incommensurate quantum Frenkel-Kontorova model
By using the density-matrix renormalization group technique, the incommensurate quantum Frenkel-Kontorova model is investigated numerically. It is found that when the quantum fluctuation is strong enough, the $g$ function featured by a sawtooth map in the depinned state will show a different kind of behavior, similar to a standard map, …