کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1858943 1530555 2016 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Entanglement entropy and the Berezinskii–Kosterlitz–Thouless phase transition in the J1–J2 Heisenberg chain
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک و نجوم (عمومی)
پیش نمایش صفحه اول مقاله
Entanglement entropy and the Berezinskii–Kosterlitz–Thouless phase transition in the J1–J2 Heisenberg chain
چکیده انگلیسی


• The BKT-type transition in the J1J1–J2J2 model is clearly indicated by the two-site and block entanglement entropies.
• The corresponding size dependent scaling behaviors are given, respectively.
• Another indicator with different scaling behavior is found in the block entanglement entropy.

Using the density matrix renormalization group (DMRG) technique, we study the Berezinskii–Kosterlitz–Thouless (BKT) quantum phase transition (QPT) in the J1J1–J2J2 Heisenberg chain model from the quantum entanglement point of view. It is found that the gap behavior between two neighboring two-site entanglement entropies as well as the first derivative of both the two-site entropy and the block entropy can be used as indicators for the BKT phase transition in this model. The corresponding size dependent scaling behaviors are analyzed, respectively. Our numerical results give direct evidence for the effectiveness of the entanglement in the BKT-type QPT indicating from different aspects.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 380, Issues 9–10, 6 March 2016, Pages 1066–1070
نویسندگان
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