On Mar 23, 2015, at 7:05 PM, Michele Dolfi <dolfim@phys.ethz.ch> wrote:

This looks pretty weird. I actually managed to reproduce the problem also with the simple "open chain lattice”.

I will have a look and let you know.

Best,

Michele

--

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 

On Mar 23, 2015, at 6:05 PM, Amir M.Aghaei <amir.maghaei@gmail.com> wrote:

Hi,

Is it possible to use odd number of sites with the MPS code? I am getting the following error when I change the number of sites from 8 to 7 using the tutorial file (with almost no change but changing the lattice and lattice libraries, lattice and python files are attached in case you want to reproduce):

Running task 1.
This binary contains symmetries: nu1
MAQUIS repo r4143
Temporary storage is disabled
site_types: 0 0 0 0 0 0 0
phys[0]: |( <1,0,0,0,0,0>: 1 )( <-1,0,0,0,0,0>: 1 )|
Right end: <0,0,0,0,0,0>
MPS initialization has finished...
Expecting 0 states to orthogonalize to.
Boundaries are partially initialized...
Boundaries are fully initialized...
Done init_left_right
TSMPOTensor: 1x5,  5 operators, 8 tags
TSMPOTensor: 5x5,  8 operators, 11 tags
TSMPOTensor: 5x5,  9 operators, 11 tags
TSMPOTensor: 5x5,  9 operators, 11 tags
TSMPOTensor: 5x5,  9 operators, 11 tags
TSMPOTensor: 5x1,  5 operators, 8 tags
Total number of tags: 60

Sweep 0, optimizing sites 0 and 1
Exception thrown:
vector::_M_fill_insert
The group '/spectrum' does not exist.

 

regards,

Amir

<spin_one.py><chain.xml>