All Questions
Tagged with locality gauge-theory
6
questions
4
votes
2
answers
412
views
What does local gauge invariance have to do with locality?
This concept is just being introduced to me in my QFT course, and my instructor mentioned that if a scalar field $\phi$ has $U(1)$ symmetry, then you can make a suitable gauge transformation $\phi \...
- 675
3
votes
0
answers
56
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Are anyons non local?
Studying anyonic statistics in 2 dimensions, I naturally thought to ask the question of whether anyons are non local, since as we braid one around another, no matter the distance between the two, one ...
- 737
4
votes
1
answer
1k
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Hamiltonian lattice gauge theory with physically observable local degrees of freedom
In my answer at What, in simplest terms, is gauge invariance?, I mentioned that in certain contexts there can be a "gauge theory" with a local symmetry that leave the Lagrangian/Hamiltonian invariant ...
- 48.4k
3
votes
1
answer
931
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Lagrangian gauge theory with physically observable local degrees of freedom
In my answer at What, in simplest terms, is gauge invariance?, I mentioned that in certain contexts there can be a "gauge theory" with a local symmetry that leave the
Lagrangian/Hamiltonian invariant ...
- 48.4k
12
votes
1
answer
509
views
Yang and Mills' (and others') justification for local gauge invariance
In most physics textbooks, local gauge invariance is simply postulated---you start with a global symmetry, e.g. the global phase, then allow it to depend on the spacetime point, make the necessary ...
- 121
3
votes
1
answer
252
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Unconstrained action in Yang-Mills theory
Is there any gauge in which Yang-Mills theory (4d, non-SUSY) can be written as a local action containing only the propagating modes?
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