Description
In this talk, I will present the string theory dynamics of the volume scalar rolling down an exponential potential in a background of cosmic superstring loops. In the context of the LVS potential, we demonstrate the existence of a novel string loop attractor tracker solution, in which 75% of the energy density of the universe is in the form of a gas of fundamental cosmic superstring loops (preferred over the standard radiation tracker). On this tracker, it is the continual reduction in the string tension as the volume evolves that makes the loops stable against decay. For more general non-LVS potentials, mixed radiation-loop trackers can also occur.
