Hot answers tagged

24 votes
Accepted

Is there any good review paper on the density matrix renormalization group (DMRG) method?

2003: Book chapter by Karen Hallberg. 2004: Reviews of Modern Physics by Ulrich Schollwoeck (2818 current citations). 2006: Advances in Physics by Karen Hallberg. 2008: JCTN: by Gabriele De Chiara ...
user avatar
  • 28.6k
11 votes

Is python sufficient for serious tensor network or DMRG calculations?

There probably are good Python bindings to various DMRG implementations, which allow one to run DMRG from Python. Since the implementations typically rely on lower-level C/C++/Fortran routines, the ...
user avatar
  • 14.6k
9 votes

Is python sufficient for serious tensor network or DMRG calculations?

I would argue that you can use a package like DMRG++, which is written in C++, without knowing much C/C++ or indeed any language. It has its own input format that takes some getting used to (...
user avatar
  • 4,238
8 votes

Is python sufficient for serious tensor network or DMRG calculations?

I've heard people talking about working on tensor networks for electronic structure since the 2000s, but here in the 2020s I'm aware of no code that can help me solve the problems in which I'm ...
user avatar
  • 28.6k
7 votes

Is python sufficient for serious tensor network or DMRG calculations?

For 1D spin Hamiltons it is perfectly doable even if you code from scratch. NumPy should be sufficient. I have written DMRG codes in both Julia and python and I see no difference, this is also due to ...
user avatar
  • 71
6 votes

Is there any good review paper on the density matrix renormalization group (DMRG) method?

There's two later review articles by Schollwöck that weren't in Nike's excellent list: 2011: Phil. Trans. R. Soc. A (2011) 369, 2643–2661 2011: Annals of Physics 326 (2011) 96–192
user avatar
  • 14.6k
5 votes

What are the types of DMRG?

p-DMRG Perturbatively corrected DMRG by Sheng Guo, Zhendong Li, and Garnet Chan (in 2018). Motivation: DMRG scales poorly with respect to the number of basis functions. the above paper says that DMRG'...
user avatar
  • 28.6k
4 votes
Accepted

iDMRG: are there subtle ways that finite-size effects creep in?

The iDMRG algorithm is tailored for translationally invariant 1D systems with area law ground states (gapped states). If that's what you're interested in, iDMRG is hard to beat for accuracy, assuming ...
user avatar
  • 4,238

Only top scored, non community-wiki answers of a minimum length are eligible