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Preheating after Inflation. Preheating with QFT Cosmological fluctuatons from Preheating Reheating with String Theory. Lev Kofman KITPC November 14, 2007. Early Universe Inflation. Scale factor. time. Realization of Inflation. Particlegenesis. time.
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Preheating after Inflation Preheating with QFT Cosmological fluctuatons from Preheating Reheating with String Theory Lev Kofman KITPC November 14, 2007
Early UniverseInflation Scale factor time Realization of Inflation
Particlegenesis time Inflation no entropy no temperature BANG
Schwinger formula for particle creation classical Scalar ED Quantum
Resonant Preheating in Chaotic Inflation Classical Quantum Occupation number
Decay of inflaton and preheating after inflation Classical Quantum movie Felder, LK, 06
Decay of inflaton and preheating after inflation Classical Quantum Felder, LK hep-ph/0606256 movie
Decay of inflaton and preheating after inflation Classical Quantum
Kolmogorov turbulence of bosons preheating exp excitation Non-linear “bubbly” stage thermalization
A. Frolov 07 Evolutionof energy density Evolution of gravitational potentiall
Three-linear interaction In expanding universe complete inflaton decay requires 3-legs interactions Broad Parametric Resonance Tachyonic Resonance
Above the barrier Below the barrier
Three- vs four-legs Four-legs dominates at preheating SUSY Three-legs dominates after preheating
Hubble radius end of inflation recombination time
Initial conditions from Inflation inflation Hot FRW
ModulatedFluctuations Inflationradiation Light field at inflation develops fluctuations
Modulated fluctuations in Hybrid Inflation inhomogeneouswaterfall Bernardeau, LK, Uzan 03
modulated fluctuations scalar field associated with angular position at throat warped geometry Mobile brane
Kahler moduli Inflation (Conlon&Quevedo hep-th/050912) Roulette Inflation-Kahler moduli/axion (Bond, LK, Prokushkin&Vandrevange hep-th/0612197)
Reheating after String Theory Inflation Barnaby, Burgess, Cline, hep-th/0412095 LK, Yi, hep-th/0507257 Frey, Mazumdar, Myers, hep-th/0508139 Chialva, Shiu, Underwood, hep-th/0508229 Chen, Tye, hep-th/05120000; 0602136 Dufaux, LK, Peloso 07
Realization of String Theory Hybrid Inflation Warped brane inflation throat warped geometry Mobile brane 4-dim picture Prototype of hybrid inflation
LK, Yi 05 End point of inflation Closed strings Unstable KK modes BANG SM particles Long-living KK modes related to inner isometries Open strings between branes are unstable
KK story KK particles are thermalized first SM particles are thermalized much later KK from M with isometries are stable No complete decay KK particles freeze out
Fluctuations in Cosmology with Compactification string theorist CY cosmologist CY 3+1 FRW AdS 3+1 FRW Practical cosmologist CY +fluctuations KK atom 3+1FRW +KK gas
metric wave equation for KK mode Throat geometry “big” CY
KK modes interactions kk kk kk H kk H
KK KK SM KK KK
resolution? Attachment of KS throat to a compact CY Induces symmetry breaking perturbations. Tip of KS throat is a particular case of Sasaki-Einstein manifolds. There are asymmetric SE manifolds, but no examples of asymmetric throats
Impact of isometry breaking perturbation on KK modes decay Dufaux, LK, Peloso 07