Realistic Equations of State for the Primeval Universe

Abstract

Early universe equations of state including realistic interactions between constituents are built up. Under certain reasonable assumptions, these equations are able to generate an inflationary regime prior to the nucleosynthesis period. The resulting accelerated expansion is intense enough to solve the flatness and horizon problems. In the cases of curvature parameter κequal to 0 or +1, the model is able to avoid the initial singularity and offers a natural explanation for why the universe is in expansion.

32 pages, 5 figures. Citations added in this version. Accepted EPJC

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Cited by in corpus (8)

• A complete cosmological scenario from $f(R,T^{\phi })$ gravity theory
• A Completely Regular Quantum Stress Tensor with $w<-1$
• Realistic Cyclic Magnetic Universe
• $f\left(R,{\nabla }_{{\mu }_1}R,\dots ,{\nabla }_{{\mu }_1}\dots {\nabla }_{{\mu }_n}R\right)$ theories of gravity in Einstein frame: A higher order modified Starobinsky inflation model in the Palatini approach
• A Complete Cosmological Scenario in Teleparallel Gravity
• Cosmological scenarios from multiquintessence
• Cosmic acceleration from second order gauge gravity
• Killing vectors and anisotropy