1303.2740 (Kohei Kamada et al.)

Cosmic R-string in thermal history    [PDF]

Kohei Kamada, Tatsuo Kobayashi, Keisuke Ohashi, Yutaka Ookouchi

We study stabilization of an unstable cosmic string associated with spontaneously broken $U(1)_R$ symmetry, which otherwise causes a dangerous roll-over process. We demonstrate that in a gauge mediation model, messengers can receive enough corrections from the thermal plasma of the supersymmetric standard model particles to stabilize the unstable modes of the string.

View original: http://arxiv.org/abs/1303.2740