Hi all
It looks like that one can simulate this model with ferromagnetic coupling (the message returned saying that the model has a negative sign if one uses antiferromagnetic coupling). I would like to study magnetization density as a function of external field using loop (since dirloop_sse says that the dirloop_sse for simulating the model is not implemented). Somehow non of the observables look reasonable.... So which observable should I look into in order to study the external field dependence of magnetization density. Thanks.
--- On Thu, 1/13/11, Kubila kubila@yahoo.com wrote:
From: Kubila kubila@yahoo.com Subject: Re: [ALPS-users] quantum XY model with an uniform magnetic field in the x-direction To: comp-phys-alps-users@lists.phys.ethz.ch Date: Thursday, January 13, 2011, 5:26 AM
Hi Prof. Troyer
With antiferromagnetic couplings.
--- On Thu, 1/13/11, Matthias Troyer troyer@phys.ethz.ch wrote:
From: Matthias Troyer troyer@phys.ethz.ch Subject: Re: [ALPS-users] quantum XY model with an uniform magnetic field in the x-direction To: comp-phys-alps-users@lists.phys.ethz.ch Date: Thursday, January 13, 2011, 2:44 AM
With ferromagnetic or antiferromagnetic couplings? On Jan 13, 2011, at 11:33 AM, Kubila wrote: Hi ALPS users
I was wondering can one use looper to simulate quantum XY model with an uniform magnetic field in the x-direction. Thanks.