Upside-down: The Natural Way of Building Gauge Theories

por Carlos A. García Canal (Lab. de Física Teórica, IFLP, CONICET, Universidad Nacional de La Plata, Argentina)

viernes 26 oct. 2012 12:30 → 13:30 Europe/Madrid

Sala Seminarios (Dpto. de Física Teórica (UVEG))

The construction of a gauge field theory for elementary particles usually starts by promoting global invariance of the matter action to a local one, this in turn implying the introduction of gauge fields. We present a procedure that runs the other way: starting from the action for gauge fields, matter is gauge invariantly coupled on the basis of Lorentz invariance and charge conservation. This natural approach prevents using the concept of particles separated from gauge fields that mediate interactions.