Hi Zhao Wei,

the static magnetization is just (n_up - n_down), and both densities are measured. Be careful: you will need to set the antiferromagnetic self consistency cycle (check the tutorials on how to do that).

Regarding susceptibility: The current ALPS code does not allow you to measure dynamic susceptibilities (they require more general operators that are expensive to measure). You can however specify a parameter "H" for a staggered field, and you can compute the susceptibility by evaluating dM/dH. Please contact me off the list and I'll send you more detailed instructions if you're interested in trying this.

Best, Emanuel

On Sep 12, 2011, at 11:13 AM, 赵炜 wrote:

Hi ALPS developers and users,

I am wandering how can I set to measure the magnetization and susceptibility in using DMFT Hubbard Model. Especially how to set the operator. Thanks for any help.

Zhao Wei