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arXiv 2008.11211gr-qc
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具有吸引性自交互作用的复杂本质的观察约束

Observational constraints on complex quintessence with attractive self-interaction

Belen Carvente, Víctor Jaramillo, Celia Escamilla-Rivera, Darío Núñez

摘要:

本文认为暗能量可以用一个具有玻色-爱因斯坦凝聚体类势(CSFDE)的复标量场来描述,即具有自相互作用和质量项.特别是,我们分析了一个解决方案,在一个快速的振荡制度在后期的行为作为一个宇宙学常数。我们的方案充分地描述了标准的均匀平坦的Fridman动力学,而且在这个经典的--复杂的标量场方案中,有可能模拟与暗能量有关的动力学.然而,当精确的宇宙学测试在这个景观中实施时,在a_i的限制制度(对应于标量场打开的标度因子)中为这个模型导出的通用状态方程不能受到后期电流观测的约束,因为分析仅将标量场参数限制在理论模型排除的值内。这一结果是一个明确的提示,考虑未来的CSFDE模型,例如,两个标量场,以研究宇宙的早期动力学。

英文摘要:

In this paper we consider that dark energy could be described solely by a complex scalar field with a Bose-Einstein condensate-like potential (denoted as CSFDE), that is, with a self-interaction and a mass term. In particular, we analyse a solution which in a fast oscillation regime at late-times behaves as a Cosmological Constant. Our proposal adequately describes the standard homogeneous and flat Fridman dynamics, furthermore, in this quintessence--complex scalar field scenario it is possible to mimic the dynamics related to dark energy. However, when the precision cosmological tests are implemented in this landscape, the generic Equation-of-State derived for this model in a restricted regime of a_i (which corresponds to the scale factor at which the scalar field turns on), cannot be constrained by late-time current observations, since the analysis constraints solely the scalar field parameters within values ruled out by the theoretical model. This result is a clear hint to consider future CSFDE models with, for instance, two scalar fields in order to study the early-time dynamics of the Universe.

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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