منابع مشابه
Dynamical Fermions in Hamiltonian Lattice Gauge Theory
Nearly all lattice studies with dynamical fermions rely on pseudofermion techniques. This includes the standard Hybrid Monte Carlo method for non-local boson actions [1] and more recently multiboson methods proposed by Lüscher [2] and extended to odd flavors by Boriçi and de Forcrand [3]. While these methods are presently the most efficient available for dynamical fermion calculations, much imp...
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We propose an efficient variational method for Z2 lattice gauge theory based on the matrix product ansatz. The method is applied to ladder and square lattices. The Gauss law needs to be imposed on quantum states to guarantee gauge invariance when one studies gauge theory in hamiltonian formalism. On the ladder lattice, we identify gauge invariant low-lying states by evaluating expectation value...
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The relative smoothing rates of various gauge field smoothing algorithms are investigated on O(a2)-improved SU(3) Yang–Mills gauge field configurations. In particular, an O(a2)-improved version of APE smearing is motivated by considerations of smeared link projection and cooling. The extent to which the established benefits of improved cooling carry over to improved smearing is critically exami...
متن کاملTadpole-improved Su(2) Lattice Gauge Theory
A comprehensive analysis of tadpole-improved SU(2) lattice gauge theory is made. Simulations are done on isotropic and anisotropic lattices, with and without improvement. Two tadpole renormalization schemes are employed, one using average plaquettes, the other using mean links in Landau gauge. Simulations are done with spatial lattice spacings as in the range of about 0.1– 0.4 fm. Results are p...
متن کاملA pr 1 99 8 Improved Lattice Gauge Field Hamiltonian
Lepage’s improvement scheme is a recent major progress in lattice QCD, allowing to obtain continuum physics on very coarse lattices. Here we discuss improvement in the Hamiltonian formulation, and we derive an improved Hamiltonian from a lattice Lagrangian free of O(a) errors. We do this by the transfer matrix method, but we also show that the alternative via Legendre transformation gives ident...
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ژورنال
عنوان ژورنال: Nuclear Physics B - Proceedings Supplements
سال: 2002
ISSN: 0920-5632
DOI: 10.1016/s0920-5632(01)01865-5