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How are topological spaces used in physics?

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How are topological spaces used in physics?

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fresh_42

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Topology is relatively young and it develops rapidly. I'm not 100% sure whether topology as a whole or in parts has applications in physics, i.e. how "topological" these subjects really are:How are topological spaces used in physics?

https://en.wikipedia.org/wiki/Topological_quantum_computerhttps://en.wikipedia.org/wiki/Topological_quantum_field_theoryhttps://en.wikipedia.org/wiki/Topological_insulator

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martinbn

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What do you know about topological spaces? And what do you know about physics?How are topological spaces used in physics?

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Quantitatively and conceptually, I know about as much as first year physics student physics-wise. Regarding topology, I hardly even know what it means.What do you know about topological spaces? And what do you know about physics?

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fresh_42

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Topology in its basics plays an important role in physics, simply because Hilbert spaces where physics mostly takes place are topological vector spaces.Quantitatively and conceptually, I know about as much as first year physics student physics-wise. Regarding topology, I hardly even know what it means.

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WWGD

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Topology is/provides, among other things, a framework to talk about continuity , and a way of compare properties of spaces. EDIT: You may want to consider whether standard Euclidean space, aka ##\mathbb R^4 ## is topologically the same as Space -Time 4-space. It is not, but maybe , e.g., @Orodruin can shed some more light on that.

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jedishrfu

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https://www.grc.nasa.gov/WWW/k-12/Numbers/Math/Mathematical_Thinking/blackhl.htm

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fresh_42

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Didn't convince me. A bit too simple and 3D for my taste, and partly wrong.

https://www.grc.nasa.gov/WWW/k-12/Numbers/Math/Mathematical_Thinking/blackhl.htm

It would only locally be closed or open. Additionally, the EH is hardly a real life hyperspace.If it [EH] attaches to the exterior, then the known universe is topologically a closed set with respect to the black hole. If it [EH] attaches to the interior, then the known universe is topologically an open set.

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martinbn

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Is that it? I would hardly call it work applying point set topology to black holes. All it says is that the outside of the EH is an open set, if you include the boundary it is a closed set. Same for the interior. That is trivial. Even the definition of a manifold to describe any spacetime (black hole or not) needs more topology than that.

https://www.grc.nasa.gov/WWW/k-12/Numbers/Math/Mathematical_Thinking/blackhl.htm

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Spinnor

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https://www.google.com/search?safe=...iz-img.....0..35i39j0i5i30j0i8i30.BvsKh6bY2B4

https://room.eu.com/news/results-of-this-years-nobel-prize-in-physics-is-released

Edit, the Google search should have been for "topological spaces" but the search "topology in physics" might be of interest as well.

- #11

fresh_42

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Yes, but in this physical context "topology" means something else than the mathematical term.Edit, the Google search should have been for "topological spaces" but the search "topology in physics" might be of interest as well.

- #12

Spinnor

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My mistake. A Google search for the exact quote "topological spaces in physics" turns up one search item,Yes, but in this physical context "topology" means something else than the mathematical term.

http://www.hep.caltech.edu/~fcp/math/HilbertSpace/HilbertSpace.pdf

A Google search "topological space on the arxiv preprint server" also turns up little but it did turn up this, "Theorists bridge space-time rips"

https://www.nature.com/polopoly_fs/...mns/topLeftColumn/pdf/491019a.pdf?origin=ppub

in which the term topological space appears.