Twisted Order Parameter applied to Dimerized Ladders
arXiv:0802.0576 · doi:10.1088/1751-8113/41/48/485301
Abstract
We apply the twisted order parameter (TOP) for dimerized quantum spin ladders to locate the critical phases that separate gapped phases representing quantum spin liquids of various types. Using the DMRG, method we find that the TOP is a good order parameter for these systems regardless the number of legs. As a check, we reproduce with DMRG and periodic boundary conditions the computations previously done with Quantum Montecarlo for one-dimensional S=1/2, S=1, S=3/2 and S=2 Heisenberg chains with alternating bonds.
Revtex4 file, color figures
References in corpus (6)
- New Trends in Density Matrix Renormalization
- Implementation of Spin Hamiltonians in Optical Lattices
- Quantum Criticality in Dimerized Spin Ladders
- DMRG study of the Bond Alternating \textbf{S}=1/2 Heisenberg ladder with Ferro-Antiferromagnetic couplings
- Spin-Peierls instability in the three-leg Heisenberg ladder
- Critical Lines and Massive Phases in Quantum Spin Ladders with Dimerization