Comments on geometric and universal open string tachyons near fivebranes
Dan Israël; Dan Israël; GRECO, Institut d'Astrophysique de Paris, 98bis Bd Arago, 75014 Paris, France
Журнал:
Journal of High Energy Physics
Дата:
2007-04-01
Аннотация:
In a recent work [1], Sen studied unstable D-branes in NS5-brane backgrounds and argued that in the strong curvature regime the universal open string tachyon (on D-branes of the wrong dimensionality) and the geometric tachyon (on D-branes that are BPS in flat space but not in this background) may become equivalent. We study in this note an example of a non-BPS suspended D-brane vs. a BPS D-brane at equal distance between two fivebranes. We use boundary worldsheet CFT methods to show that these two unstable branes are identical.
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