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• W2043284833 abstract "We study the basic features of the two-dimensional quantum Hubbard model at half-filling by of the Lüscher algorithm and the algorithm based on direct update of the determinant of the fermionic matrix. We implement the Lüscher idea employing the transfer matrix formalism which allows to formulate the problem on the lattice in (2 + 1) dimensions. We discuss the numerical complexity of the Lüscher technique, systematic errors introduced by a polynomial approximation and introduce some improvements which reduce long autocorrelations. In particular we show that preconditioning of the fermionic matrix speeds up the algorithm and extends the available range of parameters. We investigate the magnetic and the one-particle properties of the Hubbard model at half-filling and show that they are in qualitative agreement with the existing Monte Carlo data and the mean-field predictions." @default.
• W2043284833 created "2016-06-24" @default.
• W2043284833 creator A5028171527 @default.
• W2043284833 date "1998-04-01" @default.
• W2043284833 modified "2023-10-16" @default.
• W2043284833 title "Hubbard model with Lüscher fermions" @default.
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• W2043284833 doi "https://doi.org/10.1016/s0550-3213(98)00028-5" @default.
• W2043284833 hasPublicationYear "1998" @default.
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