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Weak finite-size dependence of velocity and strong phase dependence of central charge
Lin, ZB; Zhang, J; Qin, SJ; Lei, YA; Lin, ZB , Peking Univ, Dept Phys, Beijing 100871, Peoples R China.
2002
发表期刊COMMUNICATIONS IN THEORETICAL PHYSICS
ISSN0253-6102
卷号37期号:3页码:367-372
摘要We study the finite-size scaling behavior of velocity and central charge for different coupling constants and different phases in (1+1)-dimensional lattice model in very short chains. Using XXZ spin 1/2 chains with 15 or fewer sites, we demonstrate the weak finite-size dependence of spinon velocity for any magnitude of coupling strength J(x) and the strong phase dependence of central charge. This behavior of velocity and central charge in different coupling constants and different phases gives a method to determine phase transitions of (1+1)-dimensional models. This method is simple and efficient by utilizing only the ground state energy of very short finite-size chains. It is also general and powerful for various one-dimensional lattice models and it uncovers even the weakest Berezinski-Kosterlitz-Thouless phase transitions.
部门归属Peking Univ, Dept Phys, Beijing 100871, Peoples R China; Xinjiang Univ, Dept Phys, Urumqi 830046, Peoples R China; Kyushu Univ, Dept Phys, Higashi Ku, Fukuoka 8128581, Japan; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
关键词Spin Chain Magnetization Plateau Conformal-invariance Heisenberg Chain Band Insulator Mott Insulator State Field Transitions
学科领域Physics
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收录类别SCI
WOS记录号WOS:000174671700023
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/13570
专题理论物理所1978-2010年知识产出
通讯作者Lin, ZB , Peking Univ, Dept Phys, Beijing 100871, Peoples R China.
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GB/T 7714
Lin, ZB,Zhang, J,Qin, SJ,et al. Weak finite-size dependence of velocity and strong phase dependence of central charge[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,2002,37(3):367-372.
APA Lin, ZB,Zhang, J,Qin, SJ,Lei, YA,&Lin, ZB , Peking Univ, Dept Phys, Beijing 100871, Peoples R China..(2002).Weak finite-size dependence of velocity and strong phase dependence of central charge.COMMUNICATIONS IN THEORETICAL PHYSICS,37(3),367-372.
MLA Lin, ZB,et al."Weak finite-size dependence of velocity and strong phase dependence of central charge".COMMUNICATIONS IN THEORETICAL PHYSICS 37.3(2002):367-372.
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