Fractional branes in non-compact type IIA orientifolds | Zendy

Jaydeep Majumder | Zendy; S. Mukhopadhyay | Zendy; Koushik Ray | Zendy

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Fractional branes in non-compact type IIA orientifolds

Author(s) -

Jaydeep Majumder,

S. Mukhopadhyay,

Koushik Ray

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 - 10.1088/1126-6708/2006/11/008

Subject(s) - orbifold , tachyon , orientifold , tachyon condensation , instanton , physics , brane cosmology , abelian group , formalism (music) , mathematical physics , theoretical physics , pure mathematics , string theory , mathematics , string field theory , musical , art , visual arts

We study fractional D-branes in the Type-IIA theory on a non-compactorientifold of the orbifold C^3/Z_3 in the boundary state formalism. We findthat the fractional D0-branes of the orbifold theory become unstable due to thepresence of a tachyon, while there is a stable D-instanton whose tachyon getsprojected out. We propose that the D-instanton is obtained after tachyoncondensation. We evidence this by calculating the Whitehead group of theAbelian category of objects corresponding to the boundary states as beingisomorphic to Z_2.Comment: 29 pages, Latex2e minor corrections. references updated. Version accepted in JHE

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