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- BF_model abstract "The BF model is a topological field theory, which when quantized, becomes a topological quantum field theory. BF stands for background field. B and F, as can be seen below, are also the variables appearing in the Lagrangian of the theory, which is helpful as a mnemonic device.We have a 4-dimensional differentiable manifold M, a gauge group G, which has as "dynamical" fields a two-form B taking values in the adjoint representation of G, and a connection form A for G.The action is given bywhere K is an invariant nondegenerate bilinear form over (if G is semisimple, the Killing form will do) and F is the curvature formThis action is diffeomorphically invariant and gauge invariant. Its Euler–Lagrange equations are(no curvature)and(the covariant exterior derivative of B is zero).In fact, it is always possible to gauge away any local degrees of freedom, which is why it is called a topological field theory.However, if M is topologically nontrivial, A and B can have nontrivial solutions globally.".
- BF_model wikiPageExternalLink qg2.2.html.
- BF_model wikiPageID "1428123".
- BF_model wikiPageRevisionID "599291224".
- BF_model hasPhotoCollection BF_model.
- BF_model subject Category:Quantum_field_theory.
- BF_model comment "The BF model is a topological field theory, which when quantized, becomes a topological quantum field theory. BF stands for background field.".
- BF_model label "BF model".
- BF_model sameAs BFモデル.
- BF_model sameAs BF_모형.
- BF_model sameAs m.050r6k.
- BF_model sameAs Q4835538.
- BF_model sameAs Q4835538.
- BF_model wasDerivedFrom BF_model?oldid=599291224.
- BF_model isPrimaryTopicOf BF_model.