Twisted Order Parameter applied to Dimerized Ladders
J. Almeida, M. A. Martin-Delgado, G. Sierra
TL;DR
This paper demonstrates that the twisted order parameter (TOP) effectively identifies critical phases in dimerized quantum spin ladders, providing a versatile tool across different leg numbers and spin magnitudes.
Contribution
The study introduces the application of TOP to dimerized spin ladders and validates its effectiveness using DMRG, extending previous Monte Carlo results to multiple systems.
Findings
TOP accurately locates critical phases in dimerized ladders
TOP is effective regardless of the number of legs in the ladder
Results agree with previous Monte Carlo computations for various spins
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.
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