Isotropic spin-1 chain with twisted boundary condition

G. Fth, J. Sólyom

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

The possible ground states and the phase transitions of a spin-1 chain with bilinear-biquadratic exchange are studied numerically. In order to see better the real asymptotic behavior of the infinite system and to determine the necessary degeneracies, a twisted boundary condition is used that reduces the finite-size effects. This calculation confirms that a second-order Ising-type phase transition occurs at the Takhtajan-Babujian point from the dimerized phase to the singlet Haldane phase. The transition at the Lai-Sutherland point, to a massless phase with three soft modes, is found to be of Kosterlitz-Thouless type.

Original languageEnglish
Pages (from-to)872-881
Number of pages10
JournalPhysical Review B
Volume47
Issue number2
DOIs
Publication statusPublished - 1993

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Phase transitions
Boundary conditions
boundary conditions
Ground state
ground state

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Isotropic spin-1 chain with twisted boundary condition. / Fth, G.; Sólyom, J.

In: Physical Review B, Vol. 47, No. 2, 1993, p. 872-881.

Research output: Contribution to journalArticle

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