Abstract:
In this talk the collision of two cosmic string loops is studied.
After collision junctions are formed and the loops are entangled. We show that
after their formation the junctions start to unzip and the loops disentangle.
This analysis provides a theoretical understanding of the unzipping effect
observed in numerical simulations of a network of cosmic strings with more
than one type of cosmic strings. The unzipping phenomena have important
effects in the evolution of cosmic string networks when junctions are formed
upon collision, such as in a network of cosmic superstrings.