Vortex Scattering and Intercommuting Cosmic Strings on a Noncommutative Spacetime

We study the scattering of noncommutative vortices, based on the noncommutative field theory developed in [A. P. Balachandran, T. R. Govindarajan, G. Mangano, A. Pinzul, B. A. Qureshi, and S. Vaidya, Phys. Rev. D 75, 045009 (2007).], as a way to understand the interaction of cosmic strings. In the center-of-mass frame, the effects of noncommutativity vanish, and therefore the reconnection of cosmic strings occurs in an identical manner to the commutative case. However, when scattering occurs in a frame other than the center-of-mass frame, strings still reconnect but the well-known 90o scattering no longer need correspond to the head-on collision of the strings, due to the breakdown of Lorentz invariance in the underlying noncommutative field theory. Disciplines Physical Sciences and Mathematics | Physics Comments Suggested Citation: Joseph, A. and M. Trodden. (2010). "Vortex scattering and intercommuting cosmic strings on a noncommutative spacetime." Physical Review D. 81, 043536. © The American Physical Society http://dx.doi.org/10.1103/PhysRevD.81043536 This journal article is available at ScholarlyCommons: http://repository.upenn.edu/physics_papers/33 Vortex scattering and intercommuting cosmic strings on a noncommutative spacetime