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The D0-D8 system revisited

J.X. Lu and Rong-Jun Wu

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We address a few subtle issues regarding the interacting D0-D8 system. There are two existing interpretations for the counter-intuitive non-vanishing cylinder-diagram R-R potential. We improve them each by properly dealing with the divergence of potential in the R-R as well as the NS-NS sector, which has been ignored so far. We further test them by considering the D8 to carry a flux, electric or magnetic. We find that the improved interpretations continue to hold. We resolve a subtle issue regarding the regularization of fermionic zero-modes in the R-R sector when the D8 carries an electric flux so that a meaningful result for the potential can be calculated. The persistence of divergence for the potential in either sector in the presence of a flux on the D8 brane indicates that adding a flux/fluxes on the D8 brane doesn't help to improve its nature of existence as an independent object, therefore reenforcing the previous assertion on D8 branes.

Keywords

Supersymmetry Breaking

D-branes

 

E-print Number: 0909.0980

Cited: by |

Refers: to

PACS

11.27.+d Extended classical solutions; cosmic strings, domain walls, texture

11.10.Gh Renormalization

Subjects

Particle physics and field theory

Dates

Issue 11 (November 2009)

Received 28 September 2009, accepted for publication 19 October 2009

Published 4 November 2009



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