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- W3100238386 abstract "We propose an algorithm to convert a projected entangled pair state (PEPS) into a canonical form, analogous to the well-known canonical form of a matrix product state. Our approach is based on a variational gauging ansatz for the QR tensor decomposition of PEPS columns into a matrix product operator and a finite depth circuit of unitaries and isometries. We describe a practical initialization scheme that leads to rapid convergence in the QR optimization. We explore the performance and stability of the variational gauging algorithm in norm calculations for the transverse-field Ising and Heisenberg models on a square lattice. We also demonstrate energy optimization within the PEPS canonical form for the transverse-field Ising and Heisenberg models. We expect this canonical form to open up improved analytical and numerical approaches for PEPS." @default.
- W3100238386 created "2020-11-23" @default.
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- W3100238386 date "2019-08-05" @default.
- W3100238386 modified "2023-10-16" @default.
- W3100238386 title "Conversion of projected entangled pair states into a canonical form" @default.
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- W3100238386 doi "https://doi.org/10.1103/physrevb.100.054404" @default.
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