Geometrical tachyon dynamics in the background of a bulk tachyon field | Zendy

Eleftherios Papantonopoulos | Zendy; Ioanna Pappa | Zendy; Vassilios Zamarias | Zendy

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Geometrical tachyon dynamics in the background of a bulk tachyon field

Author(s) -

Eleftherios Papantonopoulos,

Ioanna Pappa,

Vassilios Zamarias

Publication year - 2006

Publication title -

journal of high energy physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.998

H-Index - 261

eISSN - 1126-6708

pISSN - 1029-8479

DOI - 10.1088/1126-6708/2006/05/038

Subject(s) - tachyon , tachyon condensation , physics , tachyonic field , string (physics) , asymptote , inflation (cosmology) , field (mathematics) , classical mechanics , brane , quantum electrodynamics , theoretical physics , string field theory , mathematical physics , geometry , mathematics , gauge boson , gauge theory , pure mathematics , higgs mechanism

We study the dynamics of a D3-brane moving in the background of a bulktachyon field of a D3-brane solution of Type-0 string theory. We show that thedynamics on the probe D3-brane can be described by a geometrical tachyon fieldrolling down its potential which is modified by a function of the bulk tachyonand inflation occurs at weak string coupling, where the bulk tachyon condenses,near the top of the geometrical tachyon potential. We also find a lateaccelerating phase when the bulk tachyon asymptotes to zero which in thegeometrical tachyon picture corresponds to the minimum of the geometricalpotential.Comment: 27 pages, 2 figures, accepted for publication in JHE

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