Kink Collisions in Curved Field Space

  • Pontus Ahlqvist
  • Kate Eckerle
  • Brian Greene
Open Access
Regular Article - Theoretical Physics


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.


Solitons Monopoles and Instantons Effective field theories 


Open Access

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Copyright information

© The Author(s) 2015

Authors and Affiliations

  1. 1.Physics DepartmentColumbia UniversityNew YorkUnited States
  2. 2.Department of Physics and Department of Applied MathematicsColumbia UniversityNew YorkUnited States
  3. 3.Department of Physics and Department of MathematicsColumbia UniversityNew YorkUnited States

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