Upsidedown: The Natural Way of Building Gauge Theories

Speaker: Carlos García Canal, Universidad de La Plata

Speaker arrival: 15/10/2012

Speaker departure: 21/10/2012

Assigned office: 23

Title: Upsidedown: The Natural Way of Building Gauge Theories

Place: Sala de Seminarios, Departamento Física Teórica y del Cosmos (UGR)

Date: 16/10/2012

Time: 16:00

Abstract:
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.