Phase diagram of the isotropic spin-32 model on the z=3 Bethe lattice

Stefan Depenbrock, Frank Pollmann

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


We study an SU(2) symmetric spin-3/2 model on the z=3 Bethe lattice using the infinite time evolving block decimation (iTEBD) method. This model is shown to exhibit a rich phase diagram. We compute several order parameters which allow us to identify a ferromagnetic, a ferrimagnetic, an antiferromagnetic, as well as a dimerized phase. We calculate the entanglement spectra from which we conclude the existence of a symmetry protected topological phase that is characterized by S=1/2 edge spins. Details of the iTEBD algorithm used for the simulations are included.

Original languageEnglish
Article number035138
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number3
StatePublished - 29 Jul 2013
Externally publishedYes


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