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hep-lat2005
Gauge invariance in a Z_2 hamiltonian lattice gauge theory
Takanori Sugihara
We propose an efficient variational method for lattice gauge theory based on the matrix product ansatz. The method is applied to ladder and square lattices. The Gauss law nee…
hep-lat2005
Matrix product representation of gauge invariant states in a Z_2 lattice gauge theory
Takanori Sugihara
The Gauss law needs to be imposed on quantum states to guarantee gauge invariance when one studies gauge theory in hamiltonian formalism. In this work, we propose an efficient vari…