Numerical Study of Quantum Spin Systems
We have developed a new coding technique of the Lanczös method for exact diagonalization of quantum spin systems. The technique enables us to save the memory-space and CPU time in carrying out numerical calculation for substantially large system size. The algorithm, namely “subspace coding”, is discussed in detail.
- See, for example, T. Sakai and M. Takahashi, Phys. Rev. B 43 (1991) 13383.Google Scholar
- H. Q. Lin, Phys. Rev. B 42 (1990) 6561.Google Scholar
- H. Nishimori, Bussei Kenkyuu 56 (1991) 494 (in Japanese): We thank to Professor H. Nishimori for providing us TITPACK Ver. 2 coded by him.Google Scholar
- T. Tonegawa, M. Kaburagi, N. Ichikawa and I. Harada, these proceedings and to be submitted to J. Phys. Soc. Jpn.Google Scholar