SUSY Flat Direction Decay - the prospect of particle production and preheating investigated in the unitary gauge

Abstract

We look at the possibility of non-perturbative particle production after inflation from SUSY flat directions produced by rotating eigenstates thereby avoiding the standard adiabaticity conditions. This might lead to preheating and prevent the delay of thermalisation of the universe. We investigate the flat directions $LL{E}^c$ and $U^c{D}^c{D}^c$ and find no particle production. These 2 directions are very important, since they have been named as possible candidates for being the inflaton. We investigate $QLQLQL{E}^c$ and find particle production and therefore the possibility of preheating. We investigate the $LL{E}^c$ and $U^c{D}^c{D}^c$ directions appearing simultaneously, and find no production. Finally, we investigate $LL{E}^c$ and $QL{D}^c$ simultaneously - with one L-field in common. Here we do find particle production and therefore the possibility of preheating. This means that if SUSY flat directions are to delay thermalisation and thus explain the (lack of) gravitino production, it is necessary to explain why complicated directions as $QLQLQL{E}^c$ are not exited, and why combinations like $LL{E}^c$ and $QL{D}^c$ are not both exited.

v2: particle production also possible with 1 flat direction, $QLQLQL{E}^c$ v3: 2 papers added to references and included in the discussion v4: typos corrected - in line with publication

References in corpus (7)

• Gauge invariant MSSM inflaton
• Supersymmetric Thermalization and Quasi-Thermal Universe: Consequences for Gravitinos and Leptogenesis
• Reheating in supersymmetric high scale inflation
• The Fate of SUSY Flat Directions and their Role in Reheating
• Longevity of supersymmetric flat directions
• Non-Perturbative Flat Direction Decay
• Non-adiabatic quantum effects from a Standard Model time-dependent Higgs vev

Cited by in corpus (14)

• Affleck-Dine Baryogenesis and Inflation in Supergravity with Strongly Stabilized Moduli
• The nonperturbative decay of SUSY flat directions
• Gravitational Waves from the Non-Perturbative Decay of Condensates along Supersymmetric Flat Directions
• Spotted Inflation
• A complete and minimal catalogue of MSSM gauge invariant monomials
• Non-perturbative decay of udd and QLd flat directions
• Aspects of warm-flat directions
• Entropy production and curvature perturbation from dissipative curvatons
• Study of the Growth of Entropy Modes in MSSM Flat Directions Decay: Constraints on the Parameter Space
• Kinetic and chemical equilibrium of the Universe and gravitino production
• Inflation and Preheating in Supergravity with MSSM Flat Directions
• Supersymmetric flat directions and resonant gravitino production
• $\nu$MSSM superpotential to 6th order - normalised and with no superfluous couplings
• Reheating in an early supersymmetric universe