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Here I want to get the precise energy between two different spin states by the DMRG-NEVPT2, the active orbital size is (33o ,28e)
For the low-spin, the NEVPT2 energy difference of DMRGCI based on d…
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On [this advanced example](https://github.com/tenpy/tenpy/blob/main/examples/advanced/tfi_phase_transition.py), the energy of the DMRG ground state is not smooth across the critical point, as expected…
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Hello, we plan to use pyscf to perform CASSCF single point calculations on various structures on the potential energy surface of chemical reactions. We have already selected the active space (10o, 10e…
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Hi,
I am a regular user of ITensor new to Yao. I am wondering if the package has the functionality of producing an approximate quantum circuit of one and two qubit gates given an MPS (may be importe…
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First reported here: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1006788
If I revert MPICH to 3.4.1, the testcase runs fine. If I use MPICH 4.0.1, it fails with
```
===== Starting sweeps…
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What should we put for the initial state of DMRG in the Kitaev Ladder?
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# Problem
Hi @GTorlai,
I am trying to use your code with ITensors.jl to compute the groundstate of a 2D Heisenberg model and obtain random pauli measurements from it. The code works fine when st…
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Please add -D DMRG_BUILD_SYMMETRIES="U1;NONE;Z2;TwoU1;NU1" to enable other symmetries in MPS simulations. Especially Z2 symmetry for superconducting models.
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notebook 14 on segment DMRG has a bug for me using the current live version.
We should probably at a github action to check that the notebooks run without error...
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Keywords: tensor network, MPS, DMRG, iDMRG, TEBD, iTEBD, PEPS, MERA, TRG