The glueball sector of two-flavor color superconductivity

We construct the effective Lagrangian describing the light glueballs associ ated with the unbroken and confining SUc(2) color subproup for the 2 flavor superconductive phase of QCD. This Lagrangian constitutes a key ingredient for understanding the nonperturbative physics of 2 flavor color supercondu ctivity. We estimate the two photon decay process of the light glueballs us ing the saturation of the electromagnetic trace anomaly at the effective La grangian level. The present results are particularly relevant to our model of Gamma Ray Bursts based on color superconductivity in Quark Stars (R. Ouy ed and E Sannino, astro-ph/0103022). (C) 2001 Elsevier Science B.V. All rig hts reserved.