Loop Corrected D-branes Stability Conditions
نویسنده
چکیده
In type-II string theory compactifications on Calabi-Yau manifolds, topological string theory partition functions give a class of exact F-terms in the 4d effective action. We point out that in the background of constant self-dual field strength, these terms deform the central charges for D-branes wrapping Calabi-Yau manifold to include string loop corrections. We study the corresponding loop corrected D-brane stability conditions, which for B-type branes at the large volume limit produce loop corrected Hermitian-Yang-Mills equation, and for A-type branes imply loop corrected special Lagrangian submanifold condition.
منابع مشابه
Loop Corrected D-brane Stability Conditions
In type-II string theory compactifications on Calabi-Yau manifolds, topological string theory partition functions give a class of exact F-terms in the four dimensional effective action. We point out that in the background of constant self-dual field strength, these terms deform the central charges for D-branes wrapping Calabi-Yau manifold to include string loop corrections. We study the corresp...
متن کاملStability Conditions For Topological D-branes: A Worldsheet Approach
We study conditions on the topological D-branes of types A and B obtained by requiring a proper matching of the spectral flow operators on the boundary. These conditions ensure space-time supersymmetry and stability of D-branes. In most cases, we reproduce the results of Marino-Minasian-Moore-Strominger, who studied the same problem using the supersymmetric Born-Infeld action. In some other cas...
متن کاملFractional D3-branes in diverse backgrounds
In the first part of this article, we find fractional D3-branes supergravity solutions on orientifolded C/Z2 orbifolds of type IIB string theory. The one-loop corrected gauge couplings for the symplectic or orthogonal groups living on the D-branes are reproduced on the world-volume of probes. In the second part of the paper, we construct a D3-brane solution on the two-centers Taub-NUT manifold ...
متن کاملHeterotic Vacua from general (non-) Abelian Bundles
We report on the construction of four-dimensional string vacua by considering general abelian and nonabelian bundles on an internal Calabi-Yau for both heterotic theories. The structure of the resulting gauge sector is extremely rich and gives rise to many new model building possibilities. We analyse the chiral spectrum including the contribution from heterotic five-branes and provide the gener...
متن کاملJ ul 1 99 8 FIT HE - 98 - 09 July 1997 Interactions of two D - branes and String − D - brane with Quntum Correction ∗
Interactions of two D-branes and string−D-brane are examined through the loop-corrected effective potentials for the actions of D-brane and the fundamental string, which are put on the background of the other D-brane. A constant inner electromagnetic field (f) is presumed for the D-brane considered here. The quantum corrected potentials are obtained as functions of f , the R-R charge (Q) and th...
متن کامل