Scalar field inflation and Shan-Chen fluid models

Abstract

A scalar field equivalent to a non-ideal "dark energy fluid" obeying a Shan-Chen-like equation of state is used as the background source of a flat Friedmann-Robertson-Walker cosmological spacetime to describe the inflationary epoch of our universe. Within the slow-roll approximation, a number of interesting features are presented, including the possibility to fulfill current observational constraints as well as a graceful exit mechanism from the inflationary epoch.

9 pages, 5 figures; published version. The title has been changed. A new section (Section III A) has been added describing the main features of the Shan-Chen equation of state in the original context wherein it has been introduced. The stability issue of the model is also discussed in the Appendix

References in corpus (5)

• Cosmology and the Fate of Dilatation Symmetry
• BICEP2 I: Detection Of B-mode Polarization at Degree Angular Scales
• Chaplygin inspired Inflation
• Dark energy from cosmological fluids obeying a Shan-Chen non-ideal equation of state
• Single-field inflation à la generalized Chaplygin gas

Cited by in corpus (4)

• Constraints on interacting dark energy models through cosmic chronometers and Gaussian process
• Cosmological evolution with quadratic gravity and nonideal fluids
• Thermodynamics of Shearing Massless Scalar Field Spacetimes is Inconsistent With the Weyl Curvature Hypothesis
• Late-time evolution of cosmological models with fluids obeying a Shan-Chen-like equation of state