288 citations · 455 across the 6 of their papers we have counts for
5 papers · 1 filter
Quantum Impurity Entanglement
Erik S. Sørensen, Ming-Shyang Chang, Nicolas Laflorencie +1
Entanglement in J_1-J_2, S=1/2 quantum spin chains with an impurity is studied using analytic methods as well as large scale numerical density matrix renormalization group methods.…
Impurity Entanglement Entropy and the Kondo Screening Cloud
Erik S. Sørensen, Ming-Shyang Chang, Nicolas Laflorencie +1
The screening of an impurity spin by conduction electrons is associated with the formation of a large Kondo screening cloud, of size xi_K. We study the quantum entanglement between…
Boundary effects in the critical scaling of entanglement entropy in 1D systems
Nicolas Laflorencie, Erik S. Sorensen, Ming-Shyang Chang +1
We present exact diagonalization and density matrix renormalization group results for the entanglement entropy of critical spin-1/2 XXZ chains. We find that open boundary condition…
Renormalization Group Potential for Quasi-One-Dimensional Correlated Systems
Ming-Shyang Chang, Wei Chen, Hsiu-Hau Lin
We studied the correlated quasi-one-dimensional systems by one-loop renormalization group techniques in weak coupling. In contrast to conventional g-ology approach, we formulate th…
Potential Flow of Renormalization Group in Quasi-One-Dimensional Systems
Wei Chen, Ming-Shyang Chang, Hsiu-Hau Lin +2
We address the issue why the phase diagrams for quasi-one-dimensional systems are rather simple, while the renormalization group equations behind the scene are non-linear and messy…