TWO-FIELD MODELS OF DARK ENERGY WITH EQUATION OF STATE ACROSS -1

By Xiao-fei Zhang, Hong Li, Yun-Song Piao, Xinmin Zhang. 2005

173 citations recorded by the source corpus.

In this paper, we study the possibility of building two-field models of dark energy with equation of state across -1. Specifically we will consider two classes of models: one consists of two scalar fields (quintessence + phantom) and another includes one scalar (phantom) and one spinor field (neutrino). Our studies indicate to some extent that two-field models give rise to a simple realization of the dynamical dark energy model with the equation of state across w=-1.

Subfields: Astronomy and Astrophysics, Atomic and Molecular Physics, and Optics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/2bf68d67d14ce886b1e5399a93934b2af30e8446

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Citations in the corpus

Constraints on holographic dark energy from the latest supernovae, galaxy clustering, and cosmic microwave background anisotropy observations (2007, background): “Numerous other candidates for dark energy have also been proposed in the literature, such as an evolving canonical scalar field [14, 15, 16, 17, 18, 19] usually referred to as quintessence, the phantom energy [20, 21, 22] with an equation-of-state smaller than −1 violating the weak energy condition,”
Phantom energy traversable wormholes (2005, background): “The evolving dark energy with an equation of state ω crossing −1 during its evolution was dubbed “Quintom” [35, 37, 38], as it is different from the quintessence or phantom fields in the determination of the evolution and fate of the universe.”
Assessing observational constraints on dark energy (2024, unknown): “[25]).”
Dynamical systems applied to cosmology: Dark energy and modified gravity (2017, unknown): “Zhang et al. (2006) worked with the potential V (φ, σ) = A exp(−λφκφ) +B exp(−λσκσ) + C exp(−λφκφ/2) exp(−λσκσ/2) where the EN variables (5.24) can be used with the interacting term giving rise to contributions proportional to yφyσ.”