Marginal Deformations and 3-Algebra Structures (2009)
Akerblom, Nikolas, Saemann, Christian, Wolf, Martin
We study marginal deformations of superconformal Chern-Simons matter theories that are based on 3-algebras. For this, we introduce the notion of an associated 3-product, which captures very general...
D-instantons and Effective Couplings in Intersecting D-brane Models (2008)
This thesis is concerned with two aspects of intersecting D6-brane models: We treat some of the effects that are induced by E2-instantons and we consider one-loop corrections to the gauge kinetic...
D-instantons and Effective Couplings in Intersecting D-brane Models (2008)
This thesis is concerned with two aspects of intersecting D6-brane models: We treat some of the effects that are induced by E2-instantons and we consider one-loop corrections to the gauge kinetic...
D-brane Instantons in 4D Supersymmetric String Vacua (2008)
Akerblom, Nikolas, Blumenhagen, Ralph, Lust, Dieter, Schmidt-Sommerfeld, Maximilian
We review some aspects of D-instantons in intersecting D-brane models. In particular, we present applications of the recently proposed instanton calculus to computations of charged matter...
D-brane Instantons in 4D Supersymmetric String Vacua (2007)
Akerblom, Nikolas, Blumenhagen, Ralph, Lust, Dieter, Schmidt-Sommerfeld, Maximilian
We review some aspects of D-instantons in intersecting D-brane models. In particular, we present applications of the recently proposed instanton calculus to computations of charged matter...
Instantons and Holomorphic Couplings in Intersecting D-brane Models (2007)
Akerblom, Nikolas, Blumenhagen, Ralph, Lust, Dieter, Schmidt-Sommerfeld, Maximilian
We clarify certain aspects and discuss extensions of the recently introduced string D-instanton calculus (hep-th/0609191). The one-loop determinants are related to one-loop open string threshold...
Thresholds for Intersecting D-branes Revisited (2007)
Akerblom, Nikolas, Blumenhagen, Ralph, Lust, Dieter, Schmidt-Sommerfeld, Maximilian
Gauge threshold corrections for intersecting D6-brane string models on toroidal orbifold backgrounds are reconsidered. Both by dimensionally regularising the appearing open string one-loop diagrams...
Non-perturbative SQCD Superpotentials from String Instantons (2007)
Akerblom, Nikolas, Blumenhagen, Ralph, Lust, Dieter, Plauschinn, Erik, Schmidt-Sommerfeld, Maximilian
The Affleck-Dine-Seiberg instanton generated superpotential for SQCD with Nf=Nc-1 flavours is explicitly derived from a local model of engineered intersecting D6-branes with a single E2-instanton....
Thresholds for Intersecting D-branes Revisited (2007)
Akerblom, Nikolas, Blumenhagen, Ralph, Lust, Dieter, Schmidt-Sommerfeld, Maximilian
Gauge threshold corrections for intersecting D6-brane string models on toroidal orbifold backgrounds are reconsidered. Both by dimensionally regularising the appearing open string one-loop diagrams...
Instantons and Holomorphic Couplings in Intersecting D-brane Models (2007)
Akerblom, Nikolas, Blumenhagen, Ralph, Lust, Dieter, Schmidt-Sommerfeld, Maximilian
We clarify certain aspects and discuss extensions of the recently introduced string D-instanton calculus (href{/abs/hep-th/0609191}{hep-th/0609191}). The one-loop determinants are related to one-loop...
Non-perturbative SQCD Superpotentials from String Instantons (2006)
Akerblom, Nikolas, Blumenhagen, Ralph, Lust, Dieter, Plauschinn, Erik, Schmidt-Sommerfeld, Maximilian
The Affleck-Dine-Seiberg instanton generated superpotential for SQCD with Nf=Nc-1 flavours is explicitly derived from a local model of engineered intersecting D6-branes with a single E2-instanton....
Akerblom, Nikolas, Flohr, Michael
General formulas for the scalar modes a_i and a^i_D in the Seiberg-Witten SU(N) setting are derived in the cases with and without massive hypermultiplets. Subsequently these formulas are applied in a...