Fig. 1: Examples of tensor network structures.
From: Tensor networks for lattice gauge theories beyond one dimension
a Matrix product states (MPS); b Projected entangled pair states (PEPS); c Tree tensor networks (TTN) for an underlying one-dimensional system; d TTN for an underlying two-dimensional square lattice. The physical links with local dimension d and the virtual links with bond dimension χ are highlighted in all the panels.
