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Non-Perturbative Effects on a Fractional D3-Brane

Gabriele Ferretti (Institutionen för fundamental fysik, Matematisk fysik) ; Christoffer Petersson (Institutionen för fundamental fysik, Matematisk fysik)
Journal of High Energy Physics (1126-6708). Vol. 03 (2009), 3, p. 040.
[Artikel, refereegranskad vetenskaplig]

In this note we study the N = 1 abelian gauge theory on the world volume of a single fractional D3-brane. In the limit where gravitational interactions are not completely decoupled we find that a superpotential and a fermionic bilinear condensate are generated by a D-brane instanton effect. A related situation arises for an isolated cycle invariant under an orientifold projection, even in the absence of any gauge theory brane. Moreover, in presence of supersymmetry breaking background fluxes, such instanton configurations induce new couplings in the 4-dimensional effective action, including non-perturbative contributions to the cosmological constant and non-supersymmetric mass terms.

Nyckelord: Instantons, D-branes

Article Number: 040

Denna post skapades 2009-03-06. Senast ändrad 2017-11-29.
CPL Pubid: 91208


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Institutionen för fundamental fysik, Matematisk fysik (2005-2013)



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