Re-Structuring Method for the Negative Sign Problem in Quantum Spin Systems : Condensed Matter and Statistical Physics
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概要
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We present detailed discussion on a new approach we proposed in a previous paper to numerically study quantum spin systems. This method, which we will call re-structuring method hereafter, is based on rearrangement of intermediate states in the path integral formulation. We observed our approach brings remarkable improvement in the negative sign problem when applied to one-dimensional quantum spin-1/2 system with next-nearest-neighbor interactions. In this paper we add some descriptions on our method and show results from analyses by the exact diagonalization and by the transfer matrix method of the system on a small chain. These results also indicate that our method works quite effectively.
- 理論物理学刊行会の論文
- 1994-08-25
著者
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MUNEHISA Tomo
Faculty of Engineering, Yamanashi University
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Munehisa Tomo
Faculty Of Engineering University Of Yamanashi
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Munehisa Yasuko
Faculty Of Engineering Yamanashi University
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Munehisa Yasuko
Faculty Of Engineering University Of Yamanashi
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MUNEHISA Yasuko
Fermi National Accelerator Laboratory, Theoretical Division
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MUNEHISA Tomo
Fermi National Accelerator Laboratory, Theoretical Division
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