Comments on D-brane Dynamics Near NS5-Branes

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dc.creatorSahakyan, David A.
dc.date2004-08-10
dc.date2004-09-16
dc.date.accessioned2026-07-07T10:50:09Z
dc.date.available2026-07-07T10:50:09Z
dc.descriptionWe study the properties of a D-brane in the presence of $k$ NS5 branes. The Dirac-Born-Infeld action describing the dynamics of this D-brane is very similar to that of a non-BPS D-brane in ten dimensions. As the D-brane approaches the fivebranes, its equation of state approaches that of a pressureless fluid. In non-BPS D-brane case this is considered as an evidence for the decay of the D-brane into ``tachyon matter''. We show that in our case similar behavior is the consequence of the motion of the D-brane. In particular in the rest frame of the moving D-brane the equation of state is that of a usual D-brane, for which the pressure is equal to the energy density. We also compute the total cross-section for the decay of the D-brane into closed string modes and show that the emitted energy has a power like divergence for $D0$, $D1$ and $D2$ branes, while converges for higher dimensional D-branes. We also speculate on the possibility that the infalling D-brane describes a decaying defect in six dimensional Little String Theory.
dc.description18 pages, latex, references added, minor changes
dc.identifierhttps://arxiv.org/abs/hep-th/0408070
dc.identifierhttp://arxiv.org/abs/hep-th/0408070
dc.identifierJHEP0410:008,2004
dc.identifierdoi:10.1088/1126-6708/2004/10/008
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/184448
dc.subjectHigh Energy Physics - Theory
dc.titleComments on D-brane Dynamics Near NS5-Branes
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