Bilinear-biquadratic spin-1 chain undergoing quadratic Zeeman effect

Gabriele De Chiara, M. Lewenstein, A. Sanpera

Research output: Contribution to journalArticlepeer-review

42 Citations (Scopus)


The Heisenberg model for spin-1 bosons in one dimension presents many different quantum phases, including the famous topological Haldane phase. Here we study the robustness of such phases in front of a SU(2) symmetry-breaking field as well as the emergence of unique phases. Previous studies have analyzed the effect of such uniaxial anisotropy in some restricted relevant points of the phase diagram. Here we extend those studies and present the complete phase diagram of the spin-1 chain with uniaxial anisotropy. To this aim, we employ the density-matrix renormalization group together with analytical approaches. The complete phase diagram can be realized using ultracold spinor gases in the Mott insulator regime under a quadratic Zeeman effect.
Original languageEnglish
Article number054451
Pages (from-to)054451
Number of pages1
JournalPhysical Review B (Condensed Matter)
Issue number5
Publication statusPublished - 15 Aug 2011

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials


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