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D3-brane action in a supergravity background: The fermionic story

Mariana Graña*

  • Department of Physics, University of California, Santa Barbara, California 93106

  • *Email address: mariana@physics.ucsb.edu

Phys. Rev. D 66, 045014 – Published 19 August, 2002

DOI: https://doi.org/10.1103/PhysRevD.66.045014

Abstract

Using the κ-symmetric action for a D3-brane, we study the interaction between its world-volume fermions and a bosonic type IIB supergravity background preserving 4-dimensional Lorentz invariance. We find that the renormalizable terms in the action include only coupling between the fermions and the 3-form flux in the combination (*6G(3)iG(3)), which is zero for a class of supersymmetric and nonsupersymmetric solutions. We also find the magnetic and electric dipole moments for the fermions, which are proportional to the derivative of the dilaton axion. We show that different gauges to fix the κ symmetry give the same interaction terms, and prove that these terms are also SL(2,R) self-dual. We interpret our results in terms of N=1 supersymmetric gauge theory on the D-brane.

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