Effective dilaton interactions in the Standard Model

A perturbative solution of the conformal anomaly equation was found  by Riegert in 1984.

The expansion of his solution around flat space  has predicted the appearence of a massless pole 

in the effective  action describing the low-energy interaction of matter with gravity,  thus motivating perturbative one loop computations of three point  Green functions of 
one energy-momentum tensor and two neutral gauge currents in the Standard Model. 
The predicted massless pole was found in all the cases examined and  its couplings closely mimic the behaviour predicted for dilatons.
In this seminar, we present the results of these computations and  discuss some issues connected with the physical interpretation of this  degree of freedom.

Persona di contatto:Pietro Colangelo   This email address is being protected from spambots. You need JavaScript enabled to view it.Telefono:0039 0805443210
Relatore:Dr. Mirko Serino - Universita' del Salento e INFN Sezione di Lecce