88 citations · 158 across the 3 of their papers we have counts for
8 papers · 1 filter
The Universal Kaehler Modulus in Warped Compactifications
Andrew R. Frey, Gonzalo Torroba, Bret Underwood +1
We construct the effective theory of the universal Kaehler modulus in warped compactifications using the Hamiltonian formulation of general relativity. The spacetime dependent 10d…
Minimal Simple de Sitter Solutions
Sheikh Shajidul Haque, Gary Shiu, Bret Underwood +1
We show that the minimal set of necessary ingredients to construct explicit, four-dimensional de Sitter solutions from IIA string theory at tree-level are O6-planes, non-zero Roman…
Brane Inflation is Attractive
Bret Underwood
We study the phase space of initial conditions for brane inflation, and find that including the effects of the Dirac-Born-Infeld (DBI) kinetic term dramatically improves previous e…
Multifield DBI Inflation and Non-Gaussianities
Min-xin Huang, Gary Shiu, Bret Underwood
We analyze the trajectories for multifield DBI inflation, which can arise in brane inflation models, and show that the trajectories are the same as in typical slow roll inflation.…
D3-brane Vacua in Stabilized Compactifications
Oliver DeWolfe, Liam McAllister, Gary Shiu +1
D3-branes feel no force in no-scale flux compactifications of type IIB string theory, but the nonperturbative effects required to stabilize the Kahler moduli break the no-scale str…
Observing the Geometry of Warped Compactification via Cosmic Inflation
Gary Shiu, Bret Underwood
Using DBI inflation as an example, we demonstrate that the detailed geometry of warped compactification can leave an imprint on the cosmic microwave background (CMB). We compute CM…