Dielectric branes
Oct, 199932 pages
Published in:
- JHEP 12 (1999) 022
e-Print:
- hep-th/9910053 [hep-th]
Report number:
- MCGILL-99-27,
- NSF-ITP-99-113
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Abstract:
We extend the usual world-volume action for a Dp-brane to the case of N coincident Dp-branes where the world-volume theory involves a U(N) gauge theory. The guiding principle in our construction is that the action should be consistent with the familiar rules of T-duality. The resulting action involves a variety of potential terms, i.e., nonderivative interactions, for the nonabelian scalar fields. This action also shows that Dp-branes naturally couple to RR potentials of all form degrees, including both larger and smaller than p+1. We consider the dynamics resulting from this action for Dp-branes moving in nontrivial background fields, and illustrate how the Dp-branes are ``polarized'' by external fields. In a simple example, we show that a system of D0-branes in an external RR four-form field expands into a noncommutative two-sphere, which is interpreted as the formation of a spherical D2-D0 bound state.- membrane model: dielectric
- gauge field theory: U(N)
- duality: T-duality
- field theory: scalar
- bound state
- Born-Infeld model
- Chern-Simons term
- matrix model
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