Aspects of warm-flat directions

Abstract

Considering the mechanism of dissipative slow-roll that has been used in warm inflation scenario, we show that dissipation may alter usual cosmological scenarios associated with SUSY-flat directions. We mainly consider SUSY-flat directions that have strong interactions with non-flat directions and may cause strong dissipation both in thermal and non-thermal backgrounds. An example is the Affleck-Dine mechanism in which dissipation may create significant (both qualitative and quantitative) discrepancies between the conventional scenario and the dissipative one. We also discuss several mechanisms of generating curvature perturbations in which the dissipative field, which is distinguished from the inflaton field, can be used as the source of cosmological perturbations. Considering the Morikawa-Sasaki dissipative coefficient, the damping caused by the dissipation may be significant for many MSSM flat directions even if the dissipation is far from thermal equilibrium.

22 pages, accepted for publication in International Journal of Modern Physics A

References in corpus (13)

• The warm inflationary universe
• Dissipation coefficients for supersymmetric inflatonary models
• Modulated Inflation
• Longevity of supersymmetric flat directions
• The nonperturbative decay of SUSY flat directions
• Late-time Affleck-Dine baryogenesis after thermal inflation
• Hilltop Curvatons
• Cosmological perturbations from an inhomogeneous phase transition
• NO Curvatons or Hybrid Quintessential Inflation
• Delta-N formalism for the evolution of the curvature perturbations in generalized multi-field inflation
• Remote Inflation: Hybrid-like inflation without hybrid-type potential
• Evolution of curvature perturbation in generalized gravity theories
• Remote Inflation as hybrid-like sneutrino/MSSM inflation

Cited by in corpus (5)

• Dissipation coefficients from scalar and fermion quantum field interactions
• Observational Constraints on Monomial Warm Inflation
• Cosmological perturbations for an inflaton field coupled to radiation
• Non-Gaussianity in the inflating curvaton
• Particle production and dissipation caused by the Kaluza-Klein tower