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Quantum Inflaton Dynamics

Authors
  • Bak, Dongsu
  • Kim, Sang Pyo
  • Kim, Sung Ku
  • Soh, Kwang-Sup
  • Yee, Jae Hyung
Type
Published Article
Publication Date
May 06, 1998
Submission Date
May 06, 1998
Identifiers
DOI: 10.1103/PhysRevD.59.027301
arXiv ID: gr-qc/9805013
Source
arXiv
License
Unknown
External links

Abstract

We show that the quantum dynamics of a real scalar field for a large class of potentials in the symmetric Gaussian state, where the nonperturbative quantum contributions are taken into account, can be described equivalently by a two-dimensional nonlinear dynamical system with a definite angular momentum (U(1) charge of a complex theory). It is found that the Gaussian state with a nearly minimal uncertainty and a large quantum fluctuation, as an initial condition, naturally explains the most of the essential features of the early stage of the inflationary Universe.

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