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 (1)

• Non-Perturbative Instabilities as a Solution of the Cosmological Moduli Problem

Cited by in corpus (4)

• 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
• Study of the Growth of Entropy Modes in MSSM Flat Directions Decay: Constraints on the Parameter Space