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Landscape, the Scale of SUSY Breaking, and Inflation
Renata Kallosh, Andrei Linde
We argue that in the simplest version of the KKLT model, the maximal value of the Hubble constant during inflation cannot exceed the present value of the gravitino mass, H< m_{3/2}…
Creation of a Compact Topologically Nontrivial Inflationary Universe
Andrei Linde
If inflation can occur only at the energy density V much smaller than the Planck density, which is the case for many inflationary models based on string theory, then the probabilit…
Current Observational Constraints on Cosmic Doomsday
Yun Wang, Jan Michael Kratochvil, Andrei Linde +1
In a broad class of dark energy models, the universe may collapse within a finite time t_c. Here we study a representative model of dark energy with a linear potential, V(ϕ)=V_0(1+…
D3/D7 Brane Inflation and Semilocal Strings
Keshav Dasgupta, Jonathan P. Hsu, Renata Kallosh +2
Among the inflationary models based on string theory, the D3/D7 model has the advantage that the flatness of the inflaton potential can be protected even with moduli stabilization.…
Racetrack Inflation
J. J. Blanco-Pillado, C. P. Burgess, J. M. Cline +5
We develop a model of eternal topological inflation using a racetrack potential within the context of type IIB string theory with KKLT volume stabilization. The inflaton field is t…
Beauty is Attractive: Moduli Trapping at Enhanced Symmetry Points
Lev Kofman, Andrei Linde, Xiao Liu +3
We study quantum effects on moduli dynamics arising from the production of particles which are light at special points in moduli space. The resulting forces trap the moduli at thes…