Comments on Unified dark energy and dark matter from a scalar field different from quintessence
Luis P. Chimento, M\'onica Forte
TL;DR
This paper discusses a scalar field model that unifies dark matter and dark energy, differing from quintessence, based on recent theoretical developments involving non-Lagrangian scalar fields and two-fluid interactions.
Contribution
It analyzes a novel scalar field approach for unifying dark matter and dark energy, extending previous models with a non-Lagrangian scalar field derived from two-fluid interactions.
Findings
Proposes a scalar field model distinct from quintessence for dark sector unification
Links the scalar field to an interacting two-fluid system
Provides theoretical insights into alternative dark energy and dark matter models
Abstract
In a recent paper by C. Gao, M. Kunz, A. Liddle and D. Parkinson [arXiv:0912.0949], the unification of dark matter and dark energy was explored within a theory containing a scalar field of non-Lagrangian type. This scalar field, different from the classic quintessence, can be obtained from the scalar field representation of an interacting two-fluid mixture described in the paper by L.P. Chimento and M. Forte [arXiv:0706.4142]
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