14 citations · 14 across the 2 of their papers we have counts for
4 papers · 1 filter
Valence Bond and von Neumann Entanglement Entropy in Heisenberg Ladders
Ann B. Kallin, Ivan Gonzalez, Matthew B. Hastings +1
We present a direct comparison of the recently-proposed valence bond entanglement entropy and the von Neumann entanglement entropy on spin 1/2 Heisenberg systems using quantum Mont…
Excitons in the One-Dimensional Hubbard Model: a Real-Time Study
K. A. Al-Hassanieh, F. A. Reboredo, A. E. Feiguin +2
We study the real-time dynamics of a pair hole/doubly-occupied-site, namely a holon and a doublon, in a 1D Hubbard insulator with on-site and nearest-neighbor Coulomb repulsion. Ou…
Stabilization of magnetic polarons in antiferromagnetic semiconductors by extended spin distortions
J. Castro, I. Gonzalez, D. Baldomir
We study the problem of a magnetic polaron in an antiferromagnetic semiconductor (ferron). We obtain an analytical solution for the distortion produced in the magnetic structure of…
Phase diagram as a function of temperature and magnetic field for magnetic semiconductors
I. Gonzalez, J. Castro, D. Baldomir
Using an extension of the Nagaev model of phase separation (E.L. Nagaev, and A.I. Podel'shchikov, Sov. Phys. JETP, 71 (1990) 1108), we calculate the phase diagram for degenerate an…