Smooth Boundary Conditions For Quantum Lattice Systems

Details Smooth Boundary Conditions For Quantum Lattice Systems Smooth Boundary Conditions For Quantum Lattice Systems

1993-10-22

arxiv.org/abs/cond-mat/9310053v1

Physics

Condensed Matter

plain TeX 10 Pages + 4 Figures available upon request, UCI preprint

Scientific paper

10.1103/PhysRevLett.71.4283

We introduce a new type of boundary conditions, {\it smooth boundary conditions}, for numerical studies of quantum lattice systems. In a number of circumstances, these boundary conditions have substantially smaller finite-size effects than periodic or open boundary conditions. They can be applied to nearly any short-ranged Hamiltonian system in any dimensionality and within almost any type of numerical approach.

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