A W Sandvik 1992 J. Phys. A: Math. Gen. 25 3667 doi:10.1088/0305-4470/25/13/017
A W Sandvik
Show affiliationsA recently introduced generalization of Handscomb's quantum Monte Carlo scheme (1962) is further developed. Expressions for expectation values of various observables are studied in detail. A more efficient algorithm for importance sampling in a space of state vectors and operator strings is constructed, using the 1D Hubbard model as an illustrative example. As a test of the method, 32-site rings at band fillings 1/4, 3/8 and 1/2 are studied at a low temperature. Results for spin- and charge-density structure factors and static susceptibilities are presented.
02.70.Ss Quantum Monte Carlo methods
82B80 Numerical methods (Monte Carlo, series resummation, etc.) (See also 65-XX, 81T80)
Issue 13 (7 July 1992)
A W Sandvik 1992 J. Phys. A: Math. Gen. 25 3667
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