D-Brane Dynamics and NS5 Rings

Details D-Brane Dynamics and NS5 Rings D-Brane Dynamics and NS5 Rings

2004-11-12

arxiv.org/abs/hep-th/0411130v2

JHEP 0502:015,2005

Physics

High Energy Physics

High Energy Physics - Theory

17 pages, Latex, 8 figures; References added

Scientific paper

10.1088/1126-6708/2005/02/015

We consider the classical motion of a probe D-brane moving in the background geometry of a ring of NS5 branes, assuming that the latter are non-dynamical. We analyse the solutions to the Dirac-Born-Infield (DBI) action governing the approximate dynamics of the system. In the near horizon (throat) approximation we find several exact solutions for the probe brane motion. These are compared to numerical solutions obtained in more general cases. One solution of particular interest is when the probe undergoes oscillatory motion through the centre of the ring (and perpendicular to it). By taking the ring radius sufficiently large, this solution should remain stable to any stringy corrections coming from open-strings stretching between the probe and the NS5-branes along the ring.

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