Hi Konev,

Thank you for your quick reply. I looked at your Mathematica file and it indeed gives the same results as the ALPS fulldiag code. I also checked the sse code and it gives the same results - just the like the red curve in your plot. Can you try using the sse code and check if the results still disagree?

Best regards

Matthias

On 22 Nov 2014, at 14:42, vitbka konef <konefvitbka53@gmail.com> wrote:

My name is Konev Vitaliy.

1) Yes , it does.

2) In Mathematica I use the periodic boundary conditions.

How realised the periodic boundary conditions in ALPS library?

  

I was attached  test of the result for periodic boundary condition.

<Test_Energy_Heis_FM.png>