Cosmic D- and DF-strings from D3 anti-D 3: Black Strings and BPS Bound

Dec, 2006
23 pages
Published in:
  • Phys.Rev.D 77 (2008) 065027
e-Print:
Report number:
  • KIAS-P06067

Citations per year

2007200820092010320
Abstract:
We study D- and DF-strings from D3Dˉ3{\bar {\rm D}}3 in the context of Dirac-Born-Infeld type effective field theory. In the presence of an electric flux from a transverse direction, gravitating thick D-string solutions form a spatial manifold, S2×R1{\rm S}^{2}\times {\rm R}^{1}, and straight D-strings stretched along the R1{}^{1} direction are located at the south and north poles of the two-sphere. There is a horizon along its equator and then the structure of black strings is supported. We also discuss systematic derivation of the BPS bounds for thin parallel D- and DF-strings in both flat and curved spacetime. The BPS sum rule is obtained for arbitrarily-separated multi-string configuration under a Gaussian type tachyon potential and, at the site of each thin BPS D(F)-string, the pressure does not vanish but is finite. For the conical geometry induced by thin BPS D- and DF-strings, we find that there exists maximum deficit angle π\pi.
  • 11.27.+d
  • 04.40.-b
  • Born-Infeld model
  • membrane model: D-brane
  • membrane model: p-brane
  • p-brane: 3
  • effective action
  • flux: electric
  • string model
  • soliton: BPS