کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1809539 1525203 2014 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Entanglement spectrum and quantum phase transitions in one-dimensional S=1 XXZ model with uniaxial single-ion anisotropy
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Entanglement spectrum and quantum phase transitions in one-dimensional S=1 XXZ model with uniaxial single-ion anisotropy
چکیده انگلیسی
Quantum phase transitions (QPTs) in one-dimensional S=1 XXZ model with uniaxial single-ion anisotropy are investigated. Bipartite entanglement, entanglement spectrum, and Schmidt gap are found to be capable of describing all the QPTs, even the infinite-order Berezinskii-Kosterlitz-Thouless (BKT) transition. According to the singular behavior of the second-order derivative of ground-state energy, the QPT between XY2 and antiferromagnetic phases is a second-order but not a BKT transition. Energy level crossing, accompanied with discontinuous entanglement entropy and entanglement spectrum, is observed at the transition point between the large-D and antiferromagnetic phases, therefore it should be a first-order QPT. In addition, doubly degenerate entanglement spectrum in the Haldane phase is observed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 443, 15 June 2014, Pages 63-69
نویسندگان
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