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arXiv 0806.3890hep-thastro-phgr-qchep-ph
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含旋量物质的暗能量模型及其五分方案

Dark Energy Model with Spinor Matter and Its Quintom Scenario

Yi-Fu Cai, Jing Wang

摘要:

一类被称为Spinor Quintom的动力学暗能量模型可以由具有非传统势的旋量场$ψ$构造。我们发现,只要选择合适的势,该模型就能使状态方程越过宇宙学常数边界而不引入鬼场。在进一步的研究中,我们表明,该模型是能够模拟一个完美的流体的Chaubergin气体与$p=-c/ρ$在演化过程中,也实现了Quintom的情况下,其状态方程跨越-1。

英文摘要:

A class of dynamical dark energy models, dubbed Spinor Quintom, can be constructed by a spinor field $ψ$ with a nontraditional potential. We find that, if choosing suitable potential, this model is able to allow the equation-of-state to cross the cosmological constant boundary without introducing any ghost fields. In a further investigation, we show that this model is able to mimic a perfect fluid of Chaplygin gas with $p=-c/ρ$ during the evolution, and also realizes the Quintom scenario with its equation-of-state across -1.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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