Quantum Inflaton Dynamics

Details Quantum Inflaton Dynamics Quantum Inflaton Dynamics

1998-05-06

arxiv.org/abs/gr-qc/9805013v1

Phys.Rev. D59 (1999) 027301

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

8 pages, revTeX, no figures

Scientific paper

10.1103/PhysRevD.59.027301

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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