DF-strings from D3${\bar {\bf D}}$3 as Cosmic StringsDF-strings from D3${\bar {\bf D}}$3 as Cosmic Strings

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 Author Cho, Inyong ♦ Kim, Yoonbai ♦ Kyae, Bumseok Source arXiv.org Content type Text File Format PDF Date of Submission 2005-10-25 Language English
 Subject Domain (in DDC) Computer science, information & general works ♦ Natural sciences & mathematics ♦ Physics Subject Keyword High Energy Physics - Theory ♦ physics:hep-th Abstract We study Dirac-Born-Infeld type effective field theory of a complex tachyon and U(1)$\times$U(1) gauge fields describing a D3${\bar {\rm D}}$3 system. Classical solutions of straight global and local DF-strings with quantized vorticity are found and are classified into two types by the asymptotic behavior of the tachyon amplitude. For sufficiently large radial distances, one has linearly-growing tachyon amplitude and the other logarithmically-growing tachyon amplitude. A constant radial electric flux density denoting the fundamental-string background makes the obtained DF-strings thick. The other electric flux density parallel to the strings is localized, which represents localization of fundamental strings in the D1-F1 bound states. Since these DF-strings are formed in the coincidence limit of the D3${\bar {\rm D}}$3, these cosmic DF-strings are safe from inflation induced by the approach of the separated D3 and ${\bar {\rm D}}3$. Description Reference: JHEP0604:012,2006 Educational Use Research Learning Resource Type Article Page Count 23