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Matrix product variational formulation for lattice gauge theory
Takanori Sugihara
For hamiltonian lattice gauge theory, we introduce the matrix product anzats inspired from density matrix renormalization group. In this method, wavefunction of the target state is…
Density matrix renormalization group approach to a two-dimensional bosonic model
Takanori Sugihara
Density matrix renormalization group (DMRG) is applied to a (1+1)-dimensional model to study spontaneous breakdown of discrete symmetry numerically. We obtain the crit…
Density matrix renormalization group in a two-dimensional Hamiltonian lattice model
Takanori Sugihara
Density matrix renormalization group (DMRG) is applied to a (1+1)-dimensional model. Spontaneous breakdown of discrete symmetry is studied numerically using vacuum wav…
Lattice representation of vector and chiral gauge theories
Takanori Sugihara
A lattice derivative is defined as a discrete Fourier transform of momentum on a finite lattice. Species doublers are removed with anti-periodic boundary conditions. U(1) chiral tr…