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29 papers · 2 filters
Moduli Potentials in Type IIA Compactifications with RR and NS Flux
Shamit Kachru, Amir-Kian Kashani-Poor
We describe a simple class of type IIA string compactifications on Calabi-Yau manifolds where background fluxes generate a potential for the complex structure moduli, the dilaton,…
Enumerating Flux Vacua with Enhanced Symmetries
Oliver DeWolfe, Alexander Giryavets, Shamit Kachru +1
We study properties of flux vacua in type IIB string theory in several simple but illustrative models. We initiate the study of the relative frequencies of vacua with vanishing sup…
A New Handle on de Sitter Compactifications
Alex Saltman, Eva Silverstein
We construct a large new class of de Sitter (and anti de Sitter) vacua of critical string theory from flux compactifications on products of Riemann surfaces. In the construction, t…
All Next-to-Maximally-Helicity-Violating One-Loop Gluon Amplitudes in N=4 Super-Yang-Mills Theory
Zvi Bern, Lance J. Dixon, David A. Kosower
We compute the next-to-MHV one-loop n-gluon amplitudes in N=4 super-Yang-Mills theory. These amplitudes contain three negative-helicity gluons and an arbitrary number of positive-h…
MHV Rules for Higgs Plus Multi-Gluon Amplitudes
Lance J. Dixon, E. W. N. Glover, Valentin V. Khoze
We use tree-level perturbation theory to show how non-supersymmetric one-loop scattering amplitudes for a Higgs boson plus an arbitrary number of partons can be constructed, in the…
N=1 Supersymmetric One-loop Amplitudes and the Holomorphic Anomaly of Unitarity Cuts
Steven J. Bidder, N. E. J. Bjerrum-Bohr, Lance J. Dixon +1
Recently, it has been shown that the holomorphic anomaly of unitarity cuts can be used as a tool in determining the one-loop amplitudes in N=4 super Yang-Mills theory. It is intere…