Obstructions and lines of marginal stability from the world-sheet

Ilka Brunner; Matthias R. Gaberdiel; Stefan Hohenegger; Christoph A. Keller

doi:10.1088/1126-6708/2009/05/007

Obstructions and lines of marginal stability from the world-sheet

Ilka Brunner
, Matthias R. Gaberdiel
, Stefan Hohenegger
, Christoph A. Keller

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

The behaviour of supersymmetric D-branes under deformations of the closed string background is studied using world-sheet methods. We explain how lines of marginal stability and obstructions arise from this point of view. We also show why = 2 B-type branes may be obstructed against (cc) perturbations, but why such obstructions do not occur for = 4 superconformal branes at c = 6, i.e. for half-supersymmetric D-branes on K3. Our analysis is based on a field theory approach in superspace, as well as on techniques from perturbed conformal field theory.

Original language	English (US)
Article number	007
Journal	Journal of High Energy Physics
Volume	2009
Issue number	5
DOIs	https://doi.org/10.1088/1126-6708/2009/05/007
State	Published - 2009
Externally published	Yes

Keywords

Conformal and W symmetry
D-branes
Extended supersymmetry
Field theories in lower dimensions

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1088/1126-6708/2009/05/007

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title = "Obstructions and lines of marginal stability from the world-sheet",

abstract = "The behaviour of supersymmetric D-branes under deformations of the closed string background is studied using world-sheet methods. We explain how lines of marginal stability and obstructions arise from this point of view. We also show why = 2 B-type branes may be obstructed against (cc) perturbations, but why such obstructions do not occur for = 4 superconformal branes at c = 6, i.e. for half-supersymmetric D-branes on K3. Our analysis is based on a field theory approach in superspace, as well as on techniques from perturbed conformal field theory.",

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doi = "10.1088/1126-6708/2009/05/007",

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AU - Brunner, Ilka

AU - Gaberdiel, Matthias R.

AU - Hohenegger, Stefan

AU - Keller, Christoph A.

PY - 2009

Y1 - 2009

N2 - The behaviour of supersymmetric D-branes under deformations of the closed string background is studied using world-sheet methods. We explain how lines of marginal stability and obstructions arise from this point of view. We also show why = 2 B-type branes may be obstructed against (cc) perturbations, but why such obstructions do not occur for = 4 superconformal branes at c = 6, i.e. for half-supersymmetric D-branes on K3. Our analysis is based on a field theory approach in superspace, as well as on techniques from perturbed conformal field theory.

AB - The behaviour of supersymmetric D-branes under deformations of the closed string background is studied using world-sheet methods. We explain how lines of marginal stability and obstructions arise from this point of view. We also show why = 2 B-type branes may be obstructed against (cc) perturbations, but why such obstructions do not occur for = 4 superconformal branes at c = 6, i.e. for half-supersymmetric D-branes on K3. Our analysis is based on a field theory approach in superspace, as well as on techniques from perturbed conformal field theory.

KW - Conformal and W symmetry

KW - D-branes

KW - Extended supersymmetry

KW - Field theories in lower dimensions

UR - https://www.scopus.com/pages/publications/67649544140

UR - https://www.scopus.com/pages/publications/67649544140#tab=citedBy

U2 - 10.1088/1126-6708/2009/05/007

DO - 10.1088/1126-6708/2009/05/007

M3 - Article

AN - SCOPUS:67649544140

SN - 1126-6708

VL - 2009

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 5

M1 - 007

ER -

Obstructions and lines of marginal stability from the world-sheet

Abstract

Keywords

ASJC Scopus subject areas

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