Exact inflationary solutions
Gabriella Piccinelli, Tonatiuh Matos, Merced Montesinos

TL;DR
This paper introduces a new class of exact inflationary solutions in a curved universe with a scalar field, perfect fluid, and cosmological constant, highlighting solutions with graceful exit behavior.
Contribution
It provides novel exact solutions for inflationary cosmology involving specific scalar field potentials and spatial curvature, expanding the set of known analytical models.
Findings
Scale factor exhibits graceful exit with negative cosmological constant.
Exact solutions derived for scalar field potentials V_+(φ) and V_-(φ).
Physical implications of solutions briefly discussed.
Abstract
We present a new class of exact inflationary solutions for the evolution of a universe with spatial curvature, filled with a perfect fluid, a scalar field with potential and a cosmological constant . With the potential and a negative cosmological constant, the scale factor experiments a graceful exit. We give a brief discussion about the physical meaning of the solutions.
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