# General Discussion

**URL:** https://itensor.discourse.group/c/general/9.md?page=1

[Latest](https://itensor.discourse.group/latest.md) · [Categories](https://itensor.discourse.group/categories.md) · [Tags](https://itensor.discourse.group/tags.md)

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## [MPS quantum circuit simulation with non-local / long-range gates, best strategies?](https://itensor.discourse.group/t/mps-quantum-circuit-simulation-with-non-local-long-range-gates-best-strategies/733)

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**Author:** [@Qottmann](https://itensor.discourse.group/u/Qottmann)\
**Replies:** 8\
**Last updated:** [March 29, 2023, 1:15pm UTC](https://itensor.discourse.group/t/mps-quantum-circuit-simulation-with-non-local-long-range-gates-best-strategies/733 "2023-03-29T13:15:04Z")

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Hello! I think there is quite the demand for simulating quantum circuits with tensor network methods to go beyond the ~30 qubit threshold of modern HPC full state vector simulators. I am aware of PastaQ that builds on t…

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## [About citing the Itensor library in a paper](https://itensor.discourse.group/t/about-citing-the-itensor-library-in-a-paper/625)

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**Author:** [@zz123](https://itensor.discourse.group/u/zz123)\
**Replies:** 3\
**Last updated:** [February 3, 2023, 7:28pm UTC](https://itensor.discourse.group/t/about-citing-the-itensor-library-in-a-paper/625 "2023-02-03T19:28:44Z")

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Hi there, I’ve a quick non-technical question. I used Itensor in one of my recent papers (itensor helps a lot!), and I cite it exactly as this link said “ITensor”. But I just receive comments from a PR series editor, an…

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## [Disappearance of steps in magnetization curve of finite size low dimensional quantum spin systems as Temperature is increased from zero](https://itensor.discourse.group/t/disappearance-of-steps-in-magnetization-curve-of-finite-size-low-dimensional-quantum-spin-systems-as-temperature-is-increased-from-zero/610)

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**Author:** [@Explorer](https://itensor.discourse.group/u/Explorer)\
**Replies:** 2\
**Last updated:** [January 24, 2023, 3:45pm UTC](https://itensor.discourse.group/t/disappearance-of-steps-in-magnetization-curve-of-finite-size-low-dimensional-quantum-spin-systems-as-temperature-is-increased-from-zero/610 "2023-01-24T15:45:48Z")

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This is general question for physics understanding: Following figure is the magnetization curves of a one-dimensional spin 1/2 trimerized J\_1-J\_1-J\_2 Heisenberg quantum spin model in magnetic field in z direction, at di…

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## [what can we understand from Entropy calculations at each DMRG iteration?](https://itensor.discourse.group/t/what-can-we-understand-from-entropy-calculations-at-each-dmrg-iteration/266)

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**Author:** [@asing](https://itensor.discourse.group/u/asing)\
**Replies:** 1\
**Last updated:** [July 19, 2022, 5:59pm UTC](https://itensor.discourse.group/t/what-can-we-understand-from-entropy-calculations-at-each-dmrg-iteration/266 "2022-07-19T17:59:57Z")

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Hi! I have a very naive question. I noticed the dmrg template in iTensor prints entanglement entropy calculated at the center of the system, at each iteration step. I was wondering as to what can we understand from the …

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## [Discourse Feature Demo](https://itensor.discourse.group/t/discourse-feature-demo/19)

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**Author:** [@miles](https://itensor.discourse.group/u/miles)\
**Replies:** 0\
**Last updated:** [April 14, 2022, 12:54am UTC](https://itensor.discourse.group/t/discourse-feature-demo/19 "2022-04-14T00:54:00Z")

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One feature of Discourse is writing code in Julia: a = zeros(N) b = \[j for j=1:N\] function f(N::Int) for i=1:N println(i) end end or in C++: int main() { auto N = 10; } Another feature is math notation with \\…

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## [Link to Previous Forum](https://itensor.discourse.group/t/link-to-previous-forum/22)

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**Author:** [@miles](https://itensor.discourse.group/u/miles)\
**Replies:** 0\
**Last updated:** [April 14, 2022, 9:30pm UTC](https://itensor.discourse.group/t/link-to-previous-forum/22 "2022-04-14T21:30:28Z")

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Our previous Support Forum has a large collection of great questions and answers, which are worth searching through. You can access and search through it at this link.

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