Comments on geometric and universal open string tachyons near fivebranes | Zendy

Dan Israël | Zendy

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Comments on geometric and universal open string tachyons near fivebranes

Author(s) -

Dan Israël

Publication year - 2007

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 - 10.1088/1126-6708/2007/04/085

Subject(s) - tachyon , physics , worldsheet , brane cosmology , string theory , curvature , brane , boundary (topology) , string (physics) , tachyon condensation , bosonic string theory , d brane , theoretical physics , mathematical physics , non critical string theory , geometry , quantum mechanics , mathematics , relationship between string theory and quantum field theory , mathematical analysis , quantum gravity , quantum

In a recent paper (hep-th/0703157), Sen studied unstable D-branes inNS5-branes backgrounds and argued that in the strong curvature regime theuniversal open string tachyon (on D-branes of the wrong dimensionality) and thegeometric tachyon (on D-branes that are BPS in flat space but not in thisbackground) may become equivalent. We study in this note an example of anon-BPS suspended D-brane vs. a BPS D-brane at equal distance between twofivebranes. We use boundary worldsheet CFT methods to show that these twounstable branes are identical.Comment: 8 pages, 1 figure; ver. 2 to appear in JHEP: one comment, refs and appendices adde

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