Large-scale numerical evidence for Bose condensation in the S=1 antiferromagnetic chain in a strong field.
作者： Erik S. Sørensen , Ian Affleck
DOI: 10.1103/PHYSREVLETT.71.1633
关键词: Physics 、 Magnon 、 Critical field 、 Quantum mechanics 、 Boson 、 Condensed matter physics 、 Bose–Einstein condensate 、 Renormalization group 、 Spin wave 、 Density matrix renormalization group 、 Heisenberg model
摘要: Using the recently proposed density matrix renormalization group technique [1] we show that magnons in S = 1 antiferromagnetic Heisenberg chain effectively behaves as bosons condense at a critical field hc. We determine spin-wave velocity, v 2.49(1), well gap � 0.4107(1)J.
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