摘要翻译:
分析了SU(mn)超对称Haldane-Shastry自旋链的基态和低能激发。在热力学极限下,发现只有SU(m0)和SU(m1)自旋链的基态简并度是有限的,而低能和低动量激发的色散关系对所有m和n值都是线性的。我们证明了SU(m1)自旋链的低能激发是由m个非相互作用狄拉克费米子的共形场理论描述的,这些费米子只有正能量;这个理论的中心电荷是m/2。最后,对n\Ge1,在低温下,在热力学极限下,表明了SU(mn)Haldane-Shastry自旋链和SU(mn)Polychronakos自旋链的配分函数是简单相关的。
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英文标题:
《Low energy properties of the SU(m|n) supersymmetric Haldane-Shastry spin
chain》
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作者:
B. Basu-Mallick, Nilanjan Bondyopadhaya, Diptiman Sen
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最新提交年份:
2007
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分类信息:
一级分类:Physics 物理学
二级分类:High Energy Physics - Theory 高能物理-理论
分类描述:Formal aspects of quantum field theory. String theory, supersymmetry and supergravity.
量子场论的形式方面。弦理论,超对称性和超引力。
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一级分类:Physics 物理学
二级分类:Statistical Mechanics 统计力学
分类描述:Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变,热力学,场论,非平衡现象,重整化群和标度,可积模型,湍流
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一级分类:Physics 物理学
二级分类:Exactly Solvable and Integrable Systems 精确可解可积系统
分类描述:Exactly solvable systems, integrable PDEs, integrable ODEs, Painleve analysis, integrable discrete maps, solvable lattice models, integrable quantum systems
精确可解系统,可积偏微分方程,可积偏微分方程,Painleve分析,可积离散映射,可解格模型,可积量子系统
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英文摘要:
The ground state and low energy excitations of the SU(m|n) supersymmetric Haldane-Shastry spin chain are analyzed. In the thermodynamic limit, it is found that the ground state degeneracy is finite only for the SU(m|0) and SU(m|1) spin chains, while the dispersion relation for the low energy and low momentum excitations is linear for all values of m and n. We show that the low energy excitations of the SU(m|1) spin chain are described by a conformal field theory of m non-interacting Dirac fermions which have only positive energies; the central charge of this theory is m/2. Finally, for n \ge 1, the partition functions of the SU(m|n) Haldane-Shastry spin chain and the SU(m|n) Polychronakos spin chain are shown to be related in a simple way in the thermodynamic limit at low temperatures.
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PDF链接:
https://arxiv.org/pdf/710.0452