Dynamics and properties of chiral cosmic strings in Minkowski space - art.no. 083516

Chiral cosmic strings are produced naturally at the end of inflation in sup ersymmetric models where the symmetry is broken via a D term. Consequently in such theories, where both inflation and cosmic strings contribute to the density and CMBR (microwave background) perturbations, it is necessary to understand the evolution of chiral cosmic string networks. We study the dyn amics of chiral cosmic strings in Minkowski space and comment on a number o f differences with those of Nambu-Goto strings. To do this we follow the wo rk of Carter and Peter who showed that the equations of motion for chiral c osmic strings reduce to a wave equation and two constraints, only one of wh ich is different from the familiar Nambu-Goto constraints. We study chiral string loop solutions consisting of many harmonics and determine their self -intersection probabilities, and comment on the possible cosmological signi ficance of these results.