Fractional branes in non-compact type IIA orientifolds

2006/02/28 by Jaydeep Majumder, Subir Mukhopadhyay, Koushik Ray
Physics and Astronomy · #Black Holes and Theoretical Physics #Noncommutative and Quantum Gravity Theories #Quantum Electrodynamics and Casimir Effect #hep-th

paper · pdf · doi:10.1088/1126-6708/2006/11/008

published as JHEP0611:008,2006 · 29 pages, Latex2e minor corrections. references updated. Version accepted in JHEP

arxiv created 2006/10/18 · openalex publication_date 2006/11/06 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We study fractional D-branes in the Type-IIA theory on a non-compact orientifold of the orbifold C³/Z₃ in the boundary state formalism. We find that the fractional D0-branes of the orbifold theory become unstable due to the presence of a tachyon, while there is a stable D-instanton whose tachyon gets projected out. We propose that the D-instanton is obtained after tachyon condensation. We evidence this by calculating the Whitehead group of the Abelian category of objects corresponding to the boundary states as being isomorphic to Z₂.

Citations

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