Relativistic Dynamics of Multi-BPS D-vortices and Straight BPS D-strings

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dc.creatorCho, Inyong
dc.creatorKim, Taekyung
dc.creatorKim, Yoonbai
dc.creatorRyu, Kyungha
dc.date2007-07-03
dc.date2008-01-07
dc.date.accessioned2026-07-07T11:52:44Z
dc.date.available2026-07-07T11:52:44Z
dc.descriptionModuli space dynamics of multi-D-vortices from D2${\bar {\rm D}}$ (equivalently, parallel straight D-strings from D3${\bar {\rm D}}$3) is systematically studied. For the BPS D-vortices, we show through exact calculations that the classical motion of randomly-distributed $n$ D-vortices is governed by a relativistic Lagrangian of free massive point-particles. When the head-on collision of two identical BPS D-vortices of zero radius is considered, it predicts either 90${}^{\circ}$ scattering or 0${}^{\circ}$ scattering equivalent to 180${}^{\circ}$ scattering. Since the former leads to a reconnection of two identical D-strings and the latter does to a case of their passing through each other, two possibilities are consistent with the prediction of string theory. It is also shown that the force between two non-BPS vortices is repulsive. Although the obtained moduli space dynamics of multi-BPS-D-vortices is exact in classical regime, the quantum effect of an F-string pair production should be included in determining the probabilities of the reconnection and the passing through for fast-moving cosmic superstrings.
dc.description18 pages, 3 figures. Changes for the analysis of scattering and minor changes have been made. 1 figure has been replaced
dc.identifierhttps://arxiv.org/abs/0707.0357
dc.identifierhttp://arxiv.org/abs/0707.0357
dc.identifierPhys.Lett.B666:502-510,2008
dc.identifierdoi:10.1016/j.physletb.2008.08.006
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/204284
dc.subjectHigh Energy Physics - Theory
dc.subjectAstrophysics
dc.titleRelativistic Dynamics of Multi-BPS D-vortices and Straight BPS D-strings
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