Abstract
We study bubble universe collisions in the ultrarelativistic limit with the new feature of allowing for nontrivial curvature in field space. We establish a simple geometrical interpretation of such collisions in terms of a double family of field profiles whose tangent vector fields stand in mutual parallel transport. This provides a generalization of the well-known flat field space limit of the free passage approximation. We investigate the limits of this approximation and illustrate our analytical results with numerical simulations.
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ArXiv ePrint: 1411.4631
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Ahlqvist, P., Eckerle, K. & Greene, B. Kink Collisions in Curved Field Space. J. High Energ. Phys. 2015, 59 (2015). https://doi.org/10.1007/JHEP04(2015)059
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DOI: https://doi.org/10.1007/JHEP04(2015)059