# DMRG/MPS Tutorials?

**URL:** https://itensor.discourse.group/t/dmrg-mps-tutorials/1137
**Category:** DMRG and Numerical Methods
**Created:** [September 3, 2023, 4:12am UTC](https://itensor.discourse.group/t/dmrg-mps-tutorials/1137 "2023-09-03T04:12:18Z")
**Posts on this page:** 3
**Page:** 1

<div class="post-metadata">

### Author: ![fracton](https://avatars.discourse-cdn.com/v4/letter/f/dbc845/32.png) [@fracton](https://itensor.discourse.group/u/fracton)
#### Post date: [September 3, 2023, 4:12am UTC](https://itensor.discourse.group/t/dmrg-mps-tutorials/1137/1 "2023-09-03T04:12:18Z")

</div>

Hi,

I am looking for some help to get started with DMRG with iTensor. I am a graduate student working in comp-chem theory (mostly on things related to method development). I have been trying to get started with dmrg/mps and have been having hard time.

Can someone here point me to any pedagogic tutorials that can explain how and why DMRG works. I have some vague idea about initial formulation of DMRG in terms of the “sweep/trace” formalism. I have hard connecting that to the MPS ansatz.

Any help would be appreciated.

---

<div class="post-metadata">

### Author: ![JanReimers](https://yyz2.discourse-cdn.com/free1/user_avatar/itensor.discourse.group/janreimers/32/171_2.png) [@JanReimers](https://itensor.discourse.group/u/JanReimers)
#### Post date: [September 3, 2023, 1:33pm UTC](https://itensor.discourse.group/t/dmrg-mps-tutorials/1137/2 "2023-09-03T13:33:35Z")

</div>

Hi Fracton,

I found this review article very useful: [https://www.sciencedirect.com/science/article/abs/pii/S0003491610001752](https://www.sciencedirect.com/science/article/abs/pii/S0003491610001752)

A couple online lectures: [https://www.theorie.physik.uni-muenchen.de/activities/schools/archiv/asc\_school\_17/video\_schollwoeck/index.html](https://www.theorie.physik.uni-muenchen.de/activities/schools/archiv/asc_school_17/video_schollwoeck/index.html)  
Another intro: [Tensor Network](https://tensornetwork.org/mps/algorithms/dmrg/)

For QChem applications you should have a look at Matt’s module: [GitHub - mtfishman/ITensorChemistry.jl: Add-on package to ITensors.jl for chemistry.](https://github.com/mtfishman/ITensorChemistry.jl)

I hope this helps.  
JR

---

<div class="post-metadata">

### Author: ![miles](https://yyz2.discourse-cdn.com/free1/user_avatar/itensor.discourse.group/miles/32/6_2.png) [@miles](https://itensor.discourse.group/u/miles)
#### Post date: [September 3, 2023, 9:57pm UTC](https://itensor.discourse.group/t/dmrg-mps-tutorials/1137/3 "2023-09-03T21:57:31Z")

</div>

In addition to Jan’s links, which are some of the best resources specific to the DMRG algorithm, you can also find a more extensive list of references and review articles here:  
[http://tensornetwork.org/reviews\_resources.html](http://tensornetwork.org/reviews_resources.html)

(@JanReimers : I didn’t know about those Schollwoeck videos. I’ll post them on the Tensor Network site since they look very good.)