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I would like to do a Trotterized time-evolution with Tensorcircuit of a spin-Hamiltonian and started with the example https://github.com/tencent-quantum-lab/tensorcircuit/blob/master/examples/timeevolution_trotter.py

I have two questions about it:

  1. What method it used to calculate the time-evolution? I can't find a source about it. Are you applying time-evolution block-decimation (TEBD)? If so, how can a truncate the state after applying a Trotterstep?

  2. I assume that one can also add noise channel to the Trottercircuit and then simulate the time-evolution as in step 1. It this correct?

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The example you linked uses exact simulation (state vector evolution) without truncation. If TEBD is required, you can try to use MPSCircuit. And if noise simulation is required, you can try DMCircuit

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