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Results tagged with physics
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user 115363
For questions about mathematical problems arising from physics, the natural science studying general properties of matter, radiation and energy.
11
votes
2
answers
610
views
What are the topological phases of quantum Hall systems?
(Fractional) quantum Hall systems are $2+1$-dimensional models which are said to possess topological order. One (maybe even complete) set of invariants of topological phases in $2+1$ dimensions is giv …
- 4,826
5
votes
0
answers
237
views
Does Dijkgraaf-Witten theory have a time-reversal symmetry?
The motivation why I'm asking is that in physics, models like Dijkgraaf-Witten are called "non-chiral" because they allow gapped boundaries, but on the other hand, people refer to models as "non-chiral …
- 3,830
11
votes
1
answer
667
views
Importance of the principal bundle in Chern-Simons theory
This is a very basic beginners question about Chern-Simons theory. The configurations that we sum over to get the partition function are given by a Lie-algebra valued 1-form $A$ on a topological 3-man …
- 5,760
21
votes
1
answer
1k
views
Fully extended TQFT and lattice models
I often read that fully extended TQFTs are supposed to classify topological phases of matter. So I would like to understand the formal nature of fully extended TQFTs on a more direct physical level (w …
- 35.5k