B
Burt A. Ovrut
Researcher at University of Pennsylvania
Publications - 399
Citations - 18682
Burt A. Ovrut is an academic researcher from University of Pennsylvania. The author has contributed to research in topics: Heterotic string theory & Supersymmetry. The author has an hindex of 71, co-authored 396 publications receiving 17944 citations. Previous affiliations of Burt A. Ovrut include Humboldt State University & Institute for Advanced Study.
Papers
More filters
Journal ArticleDOI
Stability walls in heterotic theories
TL;DR: In this article, the sub-structure of the heterotic Kahler moduli space due to the presence of non-Abelian internal gauge fields from the perspective of the four-dimensional effective theory was studied.
Journal ArticleDOI
The Atiyah class and complex structure stabilization in heterotic Calabi-Yau compactifications
TL;DR: In this article, the tools necessary to use holomorphic bundles as a mechanism for moduli stabilization are systematically developed, including the Atiyah class, which determines the deformations of the complex structure for which the gauge bundle becomes non-holomorphic and hence, non-supersymmetric.
Journal ArticleDOI
Cosmological solutions of type II string theory
TL;DR: In this article, cosmological solutions of type II string theory with a metric of the Kaluza-Klein type and nontrivial Ramond-Ramond forms are studied.
Journal ArticleDOI
Elliptic Calabi-Yau Threefolds with Z_3 x Z_3 Wilson Lines
TL;DR: A torus fibered Calabi-Yau threefold with first homotopy group Z 3 x Z 3 is constructed as a free quotient of a fiber product of two dP_9 surfaces as mentioned in this paper.
Journal ArticleDOI
Nonsingular bouncing cosmology: Consistency of the effective description
TL;DR: In this article, the authors show that nonsingular bouncing cosmologies provide a viable resolution of the big-bang singularities in cosmological models, and they also suggest a variant of ekpyrotic cosmology in which entropy perturbations are generated during the contracting phase, but are only converted into curvature perturbation after the bounce.