No, but you can choose a suitable chemical potential and then limit measurements to just configurations with a certain particle number.

On Jun 25, 2013, at 4:37 AM, Tao Ying taoying86@gmail.com wrote:

Dear ALPS developers and users,

I'm using the APLS QMC (dirloop_sse and worm) code in grand canonical ensemble, can I get these two codes running in canonical ensemble?

Best, TaoYing

-- Tao Ying, Ph.D candidate, Physics department Harbin Institute of Technology