Non-Perturbative Flat Direction Decay

Abstract

We argue that supersymmetric flat direction vacuum expectation values can decay non-perturbatively via preheating. Considering a toy U(1) gauge theory, we explicitly calculate the scalar potential, in the unitary gauge, for excitations around several flat directions. We show that the mass matrix for the excitations has non-diagonal entries which vary with the phase of the flat direction vacuum expectation value. Furthermore, this mass matrix has zero eigenvalues whose eigenstates change with time. We show that these light degrees of freedom are produced copiously in the non-perturbative decay of the flat direction vacuum expectation value.

7 pages, 2 figures. References added, version for Phys. Rev. D

References in corpus (9)

• Towards the Theory of Reheating After Inflation
• Supersymmetry Breaking in the Early Universe
• Cosmological consequences of MSSM flat directions
• Gauge invariant MSSM inflaton
• Flat directions in the scalar potential of the supersymmetric standard model
• Coupled fields in external background with application to nonthermal production of gravitinos
• Resonant decay of flat directions
• The Fate of SUSY Flat Directions and their Role in Reheating
• Non-Perturbative Instabilities as a Solution of the Cosmological Moduli Problem

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• The nonperturbative decay of SUSY flat directions
• Affleck-Dine condensate, late thermalization and the gravitino problem
• Gravitational Waves from the Non-Perturbative Decay of Condensates along Supersymmetric Flat Directions
• SUSY Flat Direction Decay - the prospect of particle production and preheating investigated in the unitary gauge
• A complete and minimal catalogue of MSSM gauge invariant monomials
• Non-perturbative decay of udd and QLd flat directions
• 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