646 citations · 8.2k across the 94 of their papers we have counts for
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Stabilizing dilaton and moduli vacua in string and M--Theory cosmology
Andre Lukas, Burt A. Ovrut, Daniel Waldram
We show how non-trivial form fields can induce an effective potential for the dilaton and metric moduli in compactifications of type II string theory and M-theory. For particular c…
String and M-Theory Cosmological Solutions with Ramond Forms
Andre Lukas, Burt A. Ovrut, Daniel Waldram
A general framework for studying a large class of cosmological solutions of the low-energy limit of type II string theory and of M-theory, with non-trivial Ramond form fields excit…
Vector-Tensor multiplet in N=2 superspace with central charge
Ahmed Hindawi, Burt A. Ovrut, Daniel Waldram
We use the four-dimensional N=2 central charge superspace to give a geometrical construction of the Abelian vector-tensor multiplet consisting, under N=1 supersymmetry, of one vect…
Cosmological Solutions of Type II String Theory
Andre Lukas, Burt A. Ovrut, Daniel Waldram
We study cosmological solutions of type II string theory with a metric of the Kaluza--Klein type and nontrivial Ramond--Ramond forms. It is shown that models with only one form exc…
Higher-Derivative Gravity in String Theory
Kristin Forger, Burt A. Ovrut, Stefan J. Theisen +1
We explicitly extract the structure of higher-derivative curvature-squared terms at genus 0 and 1 in the d=4 heterotic string effective action compactified on symmetric orbifolds b…
Soft Supersymmetry Breaking Induced by Higher-Derivative Supergravitation in the Electroweak Standard Model
Ahmed Hindawi, Burt A. Ovrut, Daniel Waldram
We show how spontaneous supersymmetry breaking in the vacuum state of higher-derivative supergravity is transmitted, as explicit soft supersymmetry-breaking terms, to the effective…