Example model 1D system showing a beyond-group symmetry studied with ITensor DMRG.

'Non-invertible symmetry-protected topological order in a group-based cluster state' Christopher Fechisin, Nathanan Tantivasadakarn, Victor V. Albert.

arxiv.org/abs/2312.09272

Our new ITensor GPU backend system is now live in the latest Julia version, building on hard work by Karl Pierce and Matt Fishman, using the elegant new package extension system. See Matt's post about the initial release here:
itensor.discourse.group/t/ann-initial-…

Exciting update on what’s new in Julia. Very informative thread:

Roadmap for ITensor at #juliacon , more details coming later in the mini! Get ready for tensor networks to solve everything 🤓.

ITensor is BACK at #juliacon . Matt Fishman from Flatiron CCQ presenting exciting updates to my “decent” gpu backend, among others.

Beautiful agreement between numerics (DMRG based on ITensor) and Ginzburg-Landau theory calculations of coexistence of CDW and superconductivity in t-t'-U Hubbard model.
arxiv.org/abs/2307.11820

From scratch implementation of DMRG using Julia version of ITensor by one of our users - check it out:

'Quantics tensor trains' (amplitude encoded functions represented as MPS) to represent Green's functions. Like using a tiny quantum computer to represent correlation functions of quantum systems (implemented with ITensor) journals.aps.org/prx/abstract/1…

Enhanced estimation of quantum state properties, tested using ITensor and PastaQ arxiv.org/abs/2304.12292

Why do some parts of ITensors.jl have type instabilities and use dynamic dispatch, and does this hurt performance? A good answer by Matt Fishman to this question: itensor.discourse.group/t/dynamic-disp…

Our DMRG study of the quantum critical point in 1D water is published Physical Review Letters. This work wouldn't be possible without the incredible ITensor software. Also, don't miss the fantastic Viewpoint by Marivi Fernández-Serra
Perimeter Institute University of Waterloo
journals.aps.org/prl/abstract/1…

Compression of Green and vertex functions in real and momentum space as MPS and MPO tensor networks, for solving Dyson equation and other quantum applications (partially implemented with ITensors.jl):

Our first code tutorial for ML(QC)2 Nordita featuring Giacomo Torlai and the ITensor based quantum circuit simulator PastaQ
juliapackages.com/p/pastaq

Two weeks ago I finished my internship at Flatiron CCQ working on the superconducting properties of the t-t’ Hubbard model using ITensor. A great experience in a great place, where I got to meet brilliant researchers and make a lot of friends. Hope to be back soon!

The ITensor Paper is published! Nice to see other leading software efforts e.g. NetKet) also publishing in SciPost Codebases

If you're using a new M-series Mac, the new Julia 1.8 is a good time to upgrade to the ARM version of Julia. ITensor DMRG (1D Hubbard model) is **twice as fast** as Julia 1.7 running in Rosetta (Intel emulation) mode.

Check out this innovative new journal, focused on scientific software and using separate DOIs for the paper and code (and soon to be home of the ITensor paper):