标题： 从手征各向异性宇宙学中的拟正交场 显示英文标题

标题： Quintom fields from chiral anisotropic cosmology

摘要： 本文中，我们从拟卡墨子场的角度分析了一个手征各向异性宇宙场景。在这个设定中，宇宙学背景是具有各向异性的比安基I型，在其中拟卡墨子场和幻影场以非标准（手征）的方式相互作用。我们从经典和量子两个方面来探讨这个问题。 在经典方案中，通过选择出现的相关参数的特定值，我们找到了解析解。值得注意的是，我们通过“大反弹”解释了“大爆炸”奇点。此外，随着宇宙时间的演化，实际上实现了各向同性化。 在量子对应部分，对于经典研究中相同参数空间给出的各种情况，我们解析地求解了惠勒-德威特方程，并且还包括了因子排序$\rm Q$。有了这些解，我们计算了概率密度，该密度随着体积函数和标量场的演化而衰减；当因子排序常数为$\rm Q \ll 0$时，它也趋向于平坦的FLRW框架。这个结果可能表明，对于一组固定的参数，当参数$\rm Q$取极小值时，各向异性在量子力学上消失了。 最后，当各向异性消失时，经典和量子解都退化为其平坦的FLRW对应物。 显示英文摘要

摘要： 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.