Superconformal invariance in the Ashkin-Teller quantum chain with free boundary conditions

Superconformal invariance in the Ashkin-Teller quantum chain with free boundary conditions
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具有自由边界条件的 Ashkin-Teller 量子链中的超共形不变性

DOI:
10.1088/0305-4470/19/16/016
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发表时间:
1986
期刊:
Journal of Physics A
影响因子:
--
通讯作者:
V. Rittenberg
V. Rittenberg
中科院分区:
--
文献类型:
--
作者:
G. Gehlen;V. Rittenberg

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数值研究了自由边界条件下Ashkin-Teller链的谱的下半部分的有限尺寸极限,并从共形不变性的观点给出了解释.确定了中心电荷c=1的Virasoro代数的几个不可约表示。对于耦合常数的两个特殊值,发生更高的退化,整个谱可以理解为N=2超共形代数的几个不可约表示。
The finite-size limit of the lower part of the spectrum of the Ashkin-Teller chain with free boundary conditions is studied numerically and interpreted from the point of view of conformal invariance. Several irreducible representations of the Virasoro algebra with the central charge c=1 are identified. For two special values of the coupling constant, higher degeneracies occur and the whole spectrum can be understood in terms of a few irreducible representations of the N=2 superconformal algebra.
DOI: 10.1016/0550-3213(84)90052-x
发表时间: 1984-01-01
期刊: NUCLEAR PHYSICS B
影响因子: 2.8
作者:
BELAVIN, AA;POLYAKOV, AM;ZAMOLODCHIKOV, AB
通讯作者: ZAMOLODCHIKOV, AB