Optimization schemes for unitary tensor-network circuit

  title={Optimization schemes for unitary tensor-network circuit},
  author={Reza Haghshenas},
  journal={arXiv: Strongly Correlated Electrons},
  • R. Haghshenas
  • Published 5 September 2020
  • Physics
  • arXiv: Strongly Correlated Electrons
We discuss the variational optimization of a unitary tensor-network circuit with different network structures. The ansatz is performed based on a generalization of well-developed multi-scale entanglement renormalization algorithm and also the conjugate-gradient method with an effective line search. We present the benchmarking calculations for different network structures by studying the Heisenberg model in a strongly disordered magnetic field and a tensor-network $QR$-decomposition. 

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