Fractionalized Edge Spins and Boundary Conditions in Frustrated Ferromagnetic Quantum Spin Chains

Hyeong Jun Lee, Moo Young Choi, Gun Sang Jeon

Research output: Contribution to journalArticlepeer-review


We examine frustrated ferromagnetic S = 1 spin chains at zero temperature by using the density-matrix renormalization group method. In open boundary conditions, the S = 1 quantum spin chains are known to produce fractionalized free spins on each edge, which causes difficulty in the numerical calculation of the thermodynamic ground states. To overcome this, we propose modified open boundary conditions to suppress the formation of fractionalized edge spins. The comparison of the physical properties of the ground states, which are obtained from the modified and the standard open boundary conditions, reveals that the modified open boundary conditions are more effective in improving the convergence behavior and reducing the computational costs.

Original languageEnglish
Pages (from-to)929-934
Number of pages6
JournalJournal of the Korean Physical Society
Issue number11
StatePublished - 1 Dec 2019

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea through Grant No. 2013R1A1A2 007959 (H.J.L. and G.S.J.), Grant No. 2018R1D1A1B0 7048749 (G.S.J.), and Grant Nos. 2016R1D1A1A0991 7318 and 2019R1F1A1046285 (M.Y.C.).

Publisher Copyright:
© 2019, The Korean Physical Society.


  • Boundary conditions
  • Density-matrix renormalization group
  • Quantum spin chains


Dive into the research topics of 'Fractionalized Edge Spins and Boundary Conditions in Frustrated Ferromagnetic Quantum Spin Chains'. Together they form a unique fingerprint.

Cite this