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    block this user An-Ping Li

    Research Fellow

    Beijing 100085, P.R.China

    A new approach to significantly reduce the negative sign problem in quantum Monte Carlo.

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    We present a new approach for Monte Carlo simulations of quantum spin systems which is able to strongly reduce the negative sign problem. Its efficiency is tested on a simple 2-dimensional fermionic model for which we show that our algorithm eliminates the sign problem. The investigation of quantum spin systems is important for understanding the physics related to strongly correlated electrons and high temperature superconductivity. A poverful technique to numerically study quantum spin systems is the quantum Monte Carlo (QMC) method based on the Suzuki-Trotter formula [1]. Unfortunately, QMC can suffer from the negative sign problem (NSP), which becomes exponentially serious on large lattices and at low temperature. In this work we present a new algorithm which is able to strongly reduce this problem. A more detailed description of this algorithm and a rigorous proof of its correctness will be published elsewhere [2]. This algorithm is general and can be applied to any quantum spin sy...

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    Title : A new approach to significantly reduce the negative sign problem in quantum Monte Carlo.
    Abstract : We present a new approach for Monte Carlo simulations of quantum spin systems which is able to strongly reduce the negative sign problem. Its efficiency is tested on a simple 2-dimensional fermionic model for which we show that our algorithm eliminates the sign problem. The investigation of quantum spin systems is important for understanding the physics related to strongly correlated electrons and high temperature superconductivity. A poverful technique to numerically study quantum spin systems is the quantum Monte Carlo (QMC) method based on the Suzuki-Trotter formula [1]. Unfortunately, QMC can suffer from the negative sign problem (NSP), which becomes exponentially serious on large lattices and at low temperature. In this work we present a new algorithm which is able to strongly reduce this problem. A more detailed description of this algorithm and a rigorous proof of its correctness will be published elsewhere [2]. This algorithm is general and can be applied to any quantum spin sy...
    Subject : unspecified
    Area : Mathematics
    Language : English
    Affiliations
    Url : http://preprints.cern.ch/archive/electronic/hep-lat/9605/9605007.ps.gz
    Doi : 10.1.1.53.2080

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    An-Ping's Peer Evaluation activity

    Emailed by 1
    • Anonymous : 1
    Downloads 699
    Views 529
    Full text requests 9
    Followed by 2

    An-Ping has...

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