6 research outputs found
Lectures on Supersymmetry Breaking
We review the subject of spontaneous supersymmetry breaking. First we
consider supersymmetry breaking in a semiclassical theory. We illustrate it
with several examples, demonstrating different phenomena, including metastable
supersymmetry breaking. Then we give a brief review of the dynamics of
supersymmetric gauge theories. Finally, we use this dynamics to present various
mechanisms for dynamical supersymmetry breaking. These notes are based on
lectures given by the authors in 2007, at various schools.Comment: 47 pages. v2: minor correction
Cosmic R-string in thermal history
We study stabilization of an unstable cosmic string associated with
spontaneously broken 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.Comment: 28 pages, 11 figures, v2: references adde