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Two-field Models of Dark Energy with Equation of State Across -1

Xiao-fei Zhang·Hong Li·Yun-Song Piao·Xinmin Zhang
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Abstract

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 $w = -1$.

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Xiao-fei Zhang, Hong Li, Yun-Song Piao, Xinmin Zhang. 2005-01-29. Two-field Models of Dark Energy with Equation of State Across -1. https://doi.org/10.1142/s0217732306018469

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