Dear Michele,

Thank you very much for your answer. I'll try the new code today to see if I can get the results.

By the way is there anyway to ask for the whole spectrum of entanglement instead of the entropies? This should be easy, so even if it's not implemented and if you're willing to show me which file(s) I should look into, I am happy to make the change myself.(I have to say that I am very new to the whole alps projects though)

Regards,

Amir

On Fri, Jan 16, 2015 at 12:25 PM, Michele Dolfi <dolfim@phys.ethz.ch> wrote:

Dear Amir,

I think you are using an old version of ALPS, i.e. before we finalized the paper. (the binary builds online are old)

To enable these feature you should compile a recent version of the code.
You can get the latest version of ALPS form the public repository:
svn co https://alps.comp-phys.org/svn/alps1/trunk/alps


Regards,
Michele

On 16.01.2015 02:55, Amir M.Aghaei wrote:

Hi,

I have this problem that I can't enable the measurement of entropy (Von-Neumann entropy) in the MPS code. I am even using the the same code in Tutorial and adding only the line:

'MEASURE[Entropy]'           :  1,

to the parameters in python code, but still the output doesn't have the measurement of entropy in it. Same is true for EnergyVariance. It would be wonderful if someone can tell me what I am doing wrong.

Regards,
Amir

--
ETH Zurich
Michele Dolfi
Institute for Theoretical Physics
HIT G 32.4
Wolfgang-Pauli-Str. 27
8093 Zurich
Switzerland

dolfim@phys.ethz.ch
www.itp.phys.ethz.ch

+41 44 633 78 56 phone
+41 44 633 11 15 fax

-- 
ETH Zurich
Michele Dolfi
Institute for Theoretical Physics
HIT G 32.4
Wolfgang-Pauli-Str. 27
8093 Zurich
Switzerland

dolfim@phys.ethz.ch
www.itp.phys.ethz.ch

+41 44 633 78 56 phone
+41 44 633 11 15 fax