Logarithmic grids combined with implicit ODE stepping reduce the number of time steps exponentially for MPS imaginary time evolution while maintaining stability via standard matrix operations.
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Thermal tensor network simulations of the t-t' Hubbard model find d-wave superconductivity on electron doping but strong fluctuating pair-density-wave order with momentum near (0, π) on hole doping in the pseudogap.
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Fast Tensor Network Imaginary Time Evolution by Implicit Stepping on Logarithmic Grids
Logarithmic grids combined with implicit ODE stepping reduce the number of time steps exponentially for MPS imaginary time evolution while maintaining stability via standard matrix operations.
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Fluctuating Pair Density Wave in Finite-temperature Phase Diagram of the $t$-$t^\prime$ Hubbard Model
Thermal tensor network simulations of the t-t' Hubbard model find d-wave superconductivity on electron doping but strong fluctuating pair-density-wave order with momentum near (0, π) on hole doping in the pseudogap.