Inflation in the scaling limit

Journal Article · Sat Jul 15 00:00:00 EDT 1989 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.40.290· OSTI ID:5940103

Matarrese, S; Ortolan, A; Lucchin, F

We investigate the stochastic dynamics of the/ital inflaton/ for a wide class of potentials leading either tochaotic or to power-law inflation.At late times the system enters a /ital scaling/ /ital regime/where macroscopic order sets in: the field distribution sharply peaksaround the classical slow-rollover configuration and curvature perturbationsoriginate with a non-Gaussian scale-invariant statistics.

• Research Organization: Dipartimento di Fisica ''Galileo Galilei,'' Universita di Padova via Marzolo 8, I-35131 Padova, Italy(IT); Dipartimento di Fisica, Universita di Ferrara and Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara via Paradiso 12, I-44100 Ferrara, Italy; Dipartimento di Fisica ''Galileo Galilei,'' Universita di Padova via Marzolo 8, I-35131 Padova, Italy
• OSTI ID: 5940103
• Journal Information: Phys. Rev. D; (United States), Vol. 40:2
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COSMOLOGICAL MODELS
STOCHASTIC PROCESSES
BACKGROUND RADIATION
COSMIC RADIATION
GAUSSIAN PROCESSES
HUBBLE EFFECT
LANGEVIN EQUATION
PERTURBATION THEORY
POTENTIALS
PROBABILITY
QUANTUM FIELD THEORY
SCALAR FIELDS
SCALING LAWS
UNIVERSE
EQUATIONS
FIELD THEORIES
IONIZING RADIATIONS
MATHEMATICAL MODELS
RADIATIONS
640106* - Astrophysics & Cosmology- Cosmology
645400 - High Energy Physics- Field Theory