论文标题

手性各向异性宇宙学的五重奏场

Quintom fields from chiral anisotropic cosmology

论文作者

Socorro, J., Pérez-Payán, S., Hernández-Jiménez, Rafael, Espinoza-García, Abraham, Díaz-Barrón, Luis Rey

论文摘要

在本文中,我们介绍了手性各向异性宇宙学场景的分析。在此设置中,典型和幻影字段在各向异性Bianchi I型背景中以非标准(手性)方式相互作用。我们从两个方面进行检查:古典和量子方法。在经典程序中,我们找到了通过特定选择的相关参数给出的分析解决方案。值得注意的是,我们通过“大弹跳”来介绍“大爆炸”“奇异”。而且,随着时间的发展,各向同性化实际上已达到。在量子对应物上,对于经典研究中相同的参数空间给出的各种实例,可以通过分析求解Wheeler-Dewitt方程,我们还包括订购$ \ rm Q $的因子。在此方案中具有解决方案,我们计算概率密度,实际上被抑制了体积函数和标量场的发展。当因子排序常数$ \ rm q \ ll 0 $时,它也倾向于平坦的FLRW框架。该结果可能表明,对于一组固定的参数,各向异性量子机械量子消失了参数$ \ rm q $的非常小的值。最后,当各向异性消失时,经典和量子溶液减少了其平坦的FLRW溶液。

In this paper we present an analysis of a chiral anisotropic cosmological scenario from the perspective of quintom fields. In this setup quintessence and phantom fields interact in a non-standard (chiral) way within an anisotropic Bianchi type I background. We present our examination from two fronts: classical and quantum approaches. In the classical program we find analytical solutions given by a particular choice of the emerged relevant parameters. Remarkably, we present an explanation of the ''big-bang'' singularity by means of a ''big-bounce''. Moreover, isotropization is in fact reached as the time evolves. On the quantum counterpart the Wheeler-DeWitt equation is analytically solved for various instances given by the same parameter space from the classical study, and we also include the factor ordering $\rm Q$. Having solutions in this scheme we compute the probability density, which is in effect damped as the volume function and the scalar fields evolve; and it also tends towards a flat FLRW framework when the factor ordering constant $\rm Q \ll 0$. This result might indicate that for a fixed set of parameters, the anisotropies quantum-mechanically vanish for very small values of the parameter $\rm Q$. Finally, classical and quantum solutions reduce to their flat FLRW counterparts when the anisotropies vanish.

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