Numerical Renormalization Group Study of Random Transverse Ising Models in One and Two Space Dimensions
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概要
- 論文の詳細を見る
The quantum critical behavior and the Griffiths-McCoy singularities of random quantum Ising ferromagnets are studied by applying a numerical implementation of the Ma-Dasgupta-Hu renormalization group scheme. We check the procedure for the analytically tractable one-dimensional case and apply our code to the quasi-one-dimensional double chain. For the latter we obtain identical critical exponents as for the simple chain implying the same universality class. Then we apply the method to the two-dimensional case for which we get estimates for the exponents that are compatible with a recent study in the same spirit.
- 理論物理学刊行会の論文
- 2000-04-28
著者
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川島 直輝
Department Of Physics Tokyo Metropolitan University
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Lin Yu-cheng
Institut Fur Physik Wa 331 Johannes Gutenberg-universitat
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Rieger Heiko
Theoretische Physik Universitat Des Saarlandes
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LIN Yu-Cheng
NIC, c
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KAWASHIMA Naoki
o Forschungszentrum Julich
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IGLOI Ferenc
Department of Physics, Tokyo Metropolitan University
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RIEGER Heiko
Res. Inst. f. Solid State Physics & Optics
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Igloi Ferenc
Research Institute For Solid State Physics And Optics:institute Of Theoretical Physics Szeged Univer
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Kawashima Naoki
Department Of Physics Faculty Of Science University Of Tokyo
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LIN Yu-Cheng
NIC, c/o Forschungszentrum Julich
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Igloi Ferenc
Res. Inst. f. Solid State Physics & Optics
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RIEGER Heiko
NIC, c/o Forschungszentrum Julich
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IGLOI Ferenc
Res. Inst. f. Solid State Physics & Optics:Institute for Theoretical Physics, Szeged University
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RIEGER Heiko
NIC, c/o Forschungszentrum Julich:FB 10.1 Theoret. Physik, Universitat d. Saarlandes
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