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Paper detail

Two-Site shift Product Wave Function Renormalization Group Method Applied to Quantum Systems

We report a way of wave function estimation for the density matrix renormalization group (DMRG) method applied to quantum systems, which has 2-site modulation, when the system size extension is necessary in both the finite and the infinite algorithms. The estimation is performed by renormalization group (RG) transformation applied to the ground state wave function, which is represented as the matrix product. This RG scheme is known as the product wave function renormalization group (PWFRG) method. In order to treat the 2-site modulation, the operation of the RG transformation is shifted by amount of 2 lattice sites. It turns out that this 2-site shift algorithm provides better wave function estimation in the thermodynamic limit, compared with the previously known PWFRG algorithm.

preprint2008arXivOpen access
Hiroshi UedaTomotoshi NishinoKoichi Kusakabe
cond-mat.stat-mechquant-ph
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Hiroshi UedaTomotoshi NishinoKoichi Kusakabe

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