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:
- hep-th/0612285 [hep-th]
Report number:
- KIAS-P06067
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Abstract:
We study D- and DF-strings from D3 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, , and straight D-strings stretched along the R 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 .- 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
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