ar X iv : h ep - l at / 0 60 20 18 v 1 1 4 Fe b 20 06 Efficient Cluster Algorithm for CP ( N − 1 ) Models

نویسندگان

  • B. B. Beard
  • S. Riederer
  • J. Wiese
چکیده

Despite several attempts, no efficient cluster algorithm has been constructed for CP (N − 1) models in the standard Wilson formulation of lattice field theory. In fact, there is a no-go theorem that prevents the construction of an efficient Wolff-type embedding algorithm. In this paper, we construct an efficient cluster algorithm for ferromagnetic SU (N)-symmetric quantum spin systems. Such systems provide a regularization for CP (N − 1) models in the framework of D-theory. We present detailed studies of the autocorrelations and find a dynamical critical exponent that is consistent with z = 0.

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تاریخ انتشار 2008