Dynamics of strings between walls

Minoru Eto, Toshiaki Fujimori, Takayuki Nagashima, Muneto Nitta, Keisuke Ohashi, Norisuke Sakai

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Configurations of vortex strings stretched between or ending on domain walls were previously found to be 1/4 Bogomol'nyi-Prasad-Sommerfield (BPS) states in N=2 supersymmetric gauge theories in 3+1 dimensions. Among zero modes of string positions, the center of mass of strings in each region between two adjacent domain walls is shown to be non-normalizable whereas the rests are normalizable. We study dynamics of vortex strings stretched between separated domain walls by using two methods, the moduli space (geodesic) approximation of full 1/4 BPS states and the charged particle approximation for string end points in the wall effective action. In the first method we explicitly obtain the effective Lagrangian in the strong coupling limit, which is written in terms of hypergeometric functions, and find the 90° scattering for head-on collision. In the second method the domain wall effective action is assumed to be U(1)N gauge theory, and we find a good agreement between two methods for well-separated strings.

Original languageEnglish
Article number045015
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume79
Issue number4
DOIs
Publication statusPublished - 2009 Feb 18

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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