Can we use low dimension key word for DMET calculation of 1D chain?

[Jila66]

In the second example "02-dmet-hchain" we have a 1D chain. in PyScf we can use cell.dimension = 1 for 1D systems

I test cell.dimension = 1 for 1D H Chain by set the exxdiv = 'ewald'.
It gives the same result as dimension = 3D with large vacume size for the KRHF and KCCSD calculations, but in the DMET part it doesn't give reasonable result ( Impurity Energy ) and it converged after 70 iteration.

Now my question is:
Can we use it for DMET calculation in general or not ?
If yes, what do we must do also add cell.dimension = 1 for it?

Thanks

[zhcui]

We currently do not support low-dimensional integrals.
I think some modification of two-electron integral generation is required.

[Jila66]

Thanks,