Stability of D1-Strings Inside a D3-Brane
Louis Leblond, and S.-H. Henry Tye
TL;DR
This paper investigates the stability of D1-strings inside D3-branes within the tachyon condensation framework, revealing their potential as cosmic strings and analyzing their properties as codimension-2 solitons coupled to RR fields.
Contribution
It demonstrates the stability of D(p-2)-branes inside Dp-branes in compactified spaces and explores their properties as cosmic string candidates.
Findings
D1-strings are stable inside D3-branes in compactified bulk.
Such strings are codimension-2 solitons coupled to RR fields.
Potential observable cosmic strings in the universe.
Abstract
Within the tachyon condensation approach, we find that a D(p-2)-brane is stable inside Dp-branes when the bulk is compactified. It is a codimension-2 soliton of the Dp-brane action with coupling to the bulk (p-1)-form RR field. We discuss the properties of such solitons. They may appear as detectable cosmic strings in our universe.
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