Hi Miles,

I was going to construct an IQMPO with exponential interaction and I found here http://itensor.org/docs.cgi?page=tutorials/MPO that it could be written simply in this way( 1D Ising as an example)

$$

H^{\sigma _{i}^{\prime }\sigma _{i}}=

%

\begin{array}{ccc}

1 & 0 & 0 \

Siz & e^{-1} & 0 \

0 & JSiz & I%

\end{array}%

$$

However, I was working on a Hubbard model with two chains. Do you think it would be possible to construct the inner chain exponential interaction into an IQMPO in a similar way? Since it is hard to use AutoMPO in this case, do you have any instructions or samples of constructing the IQMPO manually? Thank you very much.

Best regards,

Yixuan