Cosmic D- and DF-strings from D3Dbar3: Black Strings and BPS Limit

Abstract

We study D- and DF-strings in a D3$\bar{\mathrm{D}}3$ system by using Dirac-Born-Infeld type action. In the presence of an electric flux from the transverse direction, we discuss gravitating thick D-string solutions of a spatial manifold, ${\mathrm{S}}^2\times {\mathrm{R}}^1$, in which straight D-strings stretched along the R${}^1$ direction are attached to the south and north poles of the two-sphere. There is a horizon along its equator, which means the structure of black strings is formed. We also discuss the BPS limit for thin parallel D- and DF-strings in both flat and curved spacetime. We obtain the BPS sum rule for an arbitrarily-separated multi-string configuration with a Gaussian type tachyon potential. At the site of each thin BPS D(F)-string, the pressure takes a finite value. We find that there exists a maximum deficit angle $\pi$ in the conical geometry induced by thin BPS D- and DF-strings.

24 pages, 5 figures

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Cited by in corpus (3)

• Relativistic Dynamics of Multi-BPS D-vortices and Straight BPS D-strings
• BPS Limit of Multi- D- and DF-strings in Boundary String Field Theory
• Classification of Hypercylindrical Spacetimes with Momentum Flow