Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2010-05-13
Phys.Rev.D82:083524,2010
Physics
High Energy Physics
High Energy Physics - Theory
27 pages, 14 figures
Scientific paper
10.1103/PhysRevD.82.083524
Motivated by their effect on the gravitational wave signal emitted by cosmic strings, we study the dynamics of kinks on strings of different tensions meeting at junctions. The propagation of a kink through a Y-junction leads to the formation of three `daughter' kinks. Assuming a uniform distribution of the incoming wave vectors at the junction, we find there is a significant region of configuration space in which the sharpness of at least one of the daughter kinks is enhanced relative to the sharpness of the initial kink. For closed loops with junctions we show this leads to an exponential growth in time of very sharp kinks. Using numerical simulations of realistic, evolving cosmic string loops with junctions to calculate the distribution of kink amplitudes as a function of time, we show that loops of this kind typically develop several orders of magnitude of very sharp kinks before the two junctions collide. This collision, or other effects such as gravitational backreaction, may end the proliferation.
Binetruy Pierre
Bohe Alejandro
Hertog Thomas
Steer Daniele A.
No associations
LandOfFree
Proliferation of sharp kinks on cosmic (super-)string loops with junctions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Proliferation of sharp kinks on cosmic (super-)string loops with junctions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Proliferation of sharp kinks on cosmic (super-)string loops with junctions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-518501