Thank you for the response regarding my prior question regarding the dimerized chain. To follow up, I would like to ask a few more novice questions. Does the DMRG ALPS routine calculate the momentum for one-dimensional systems? Does the following unitcell definition have the appropriate open boundary conditions for efficient use of the DMRG routines? <UNITCELL name="anisotropic1d" dimension="1"> <VERTEX/> <EDGE type="0"> <SOURCE vertex="1" offset="0"/> <TARGET vertex="2" offset="0"/> </EDGE> <EDGE type="1"> <SOURCE vertex="2" offset="0"/> <TARGET vertex="1" offset="1"/> </EDGE> </UNITCELL> Thank you, Matthew Stone
On 13 Aug 2014, at 20:55, Stone, Matthew B. <stonemb@ornl.gov> wrote:
Thank you for the response regarding my prior question regarding the dimerized chain.
To follow up, I would like to ask a few more novice questions.
Does the DMRG ALPS routine calculate the momentum for one-dimensional systems?
No, and actually open systems don't have well defined momenta
Does the following unitcell definition have the appropriate open boundary conditions for efficient use of the DMRG routines? <UNITCELL name="anisotropic1d" dimension="1"> <VERTEX/> <EDGE type="0"> <SOURCE vertex="1" offset="0"/> <TARGET vertex="2" offset="0"/> </EDGE> <EDGE type="1"> <SOURCE vertex="2" offset="0"/> <TARGET vertex="1" offset="1"/> </EDGE> </UNITCELL>
This unit cell looks okay, but the open boundary conditions are set in the lattice and not in the unit cell. Matthias
Thank you, Matthew Stone
participants (2)
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Matthias Troyer
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Stone, Matthew B.