Extended connection in Yang-Mills theory

The three fundamental geometric components of Yang-Mills theory -gauge field, gauge fixing and ghost field- are unified in a new object: an extended connection in a properly chosen principal fiber bundle. To do this, it is necessary to generalize the notion of gauge fixing by using a gauge fixing co...

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Autor principal: Catren, G.
Otros Autores: Devoto, J.
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: 2008
Acceso en línea:Registro en Scopus
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100 1 |a Catren, G. 
245 1 0 |a Extended connection in Yang-Mills theory 
260 |c 2008 
270 1 0 |m Catren, G.; Instituto de Astronomia y Fisica Del Espacio, Casilla de Correo 67, Sucursal 28, Buenos Aires 1428, Argentina; email: gabrielcatren@yahoo.com.ar 
506 |2 openaire  |e Política editorial 
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520 3 |a The three fundamental geometric components of Yang-Mills theory -gauge field, gauge fixing and ghost field- are unified in a new object: an extended connection in a properly chosen principal fiber bundle. To do this, it is necessary to generalize the notion of gauge fixing by using a gauge fixing connection instead of a section. From the equations for the extended connection's curvature, we derive the relevant BRST transformations without imposing the usual horizontality conditions. We show that the gauge field's standard BRST transformation is only valid in a local trivialization and we obtain the corresponding global generalization. By using the Faddeev-Popov method, we apply the generalized gauge fixing to the path integral quantization of Yang-Mills theory. We show that the proposed gauge fixing can be used even in the presence of a Gribov's obstruction. © 2008 Springer-Verlag.  |l eng 
593 |a Instituto de Astronomia y Fisica Del Espacio, Casilla de Correo 67, Sucursal 28, Buenos Aires 1428, Argentina 
593 |a Math. Dept. FCEN, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires 1428, Argentina 
700 1 |a Devoto, J. 
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