Probing dark energy through perfect fluid thermodynamics

Abstrakt

We demonstrate that the thermodynamics of a perfect fluid describing baryonic matter can, in certain limits, lead to an equation of state similar to that of dark energy. We keep the cosmic fluid equation of state quite general by just demanding that the speed of sound is positive and less than the speed of light.

In this framework, we discuss some propositions by looking at the asymptotic behaviour of the cosmic fluid.

Klíčová slova

• dark energy
• thermodynamics