Dirac actions for D-branes on backgrounds with fluxes

Details Dirac actions for D-branes on backgrounds with fluxes Dirac actions for D-branes on backgrounds with fluxes

2005-04-05

arxiv.org/abs/hep-th/0504041v1

Class.Quant.Grav. 22 (2005) 2745-2764

Physics

High Energy Physics

High Energy Physics - Theory

25 pages

Scientific paper

10.1088/0264-9381/22/13/014

The understanding of the fermionic sector of the worldvolume D-brane dynamics on a general background with fluxes is crucial in several branches of string theory, like for example the study of nonperturbative effects or the construction of realistic models living on D-branes. In this paper we derive a new simple Dirac-like form for the bilinear fermionic action for any Dp-brane in any supergravity background, which generalizes the usual Dirac action valid in absence of fluxes. A nonzero world-volume field strength deforms the usual Dirac operator in the action to a generalized non-canonical one. We show how the canonical form can be re-established by a redefinition of the world-volume geometry.

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