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43 papers · 2 filters
On Normal Modes of a Warped Throat
Marcus K. Benna, Anatoly Dymarsky, Igor R. Klebanov +1
As shown in arXiv:hep-th/0405282, the warped deformed conifold has two bosonic massless modes, a pseudoscalar and a scalar, that are dual to the phase and the modulus of the baryon…
Accidental Inflation in String Theory
Andrei Linde, Alexander Westphal
We show that inflation in type IIB string theory driven by the volume modulus can be realized in the context of the racetrack-based Kallosh-Linde model (KL) of moduli stabilization…
Planar Limit of Orientifold Field Theories and Emergent Center Symmetry
Adi Armoni, Mikhail Shifman, Mithat Unsal
We consider orientifold field theories (i.e. SU(N) Yang--Mills theories with fermions in the two-index symmetric or antisymmetric representations) on R3xS1 where the compact dimens…
The New Ekpyrotic Ghost
Renata Kallosh, Jin U Kang, Andrei Linde +1
The new ekpyrotic scenario attempts to solve the singularity problem by involving violation of the null energy condition in a model which combines the ekpyrotic/cyclic scenario wit…
Simple de Sitter Solutions
Eva Silverstein
We present a framework for de Sitter model building in type IIA string theory, illustrated with specific examples. We find metastable dS minima of the potential for moduli obtained…
Viscosity Bound Violation in Higher Derivative Gravity
Mauro Brigante, Hong Liu, Robert C. Myers +2
Motivated by the vast string landscape, we consider the shear viscosity to entropy density ratio in conformal field theories dual to Einstein gravity with curvature square correcti…