Anisotropic perturbations due to dark energy
Anisotropic perturbations due to dark energy
复制标题
暗能量引起的各向异性扰动
DOI：
10.1103/physrevd.74.041301
复制
发表时间：
2006
影响因子：
5
通讯作者：
A. Moss
中科院分区：
文献类型：
--
作者：
R. Battye;A. Moss
各种观测测试似乎表明，宇宙是各向异性的。这与基于绝热、旋转不变微扰的标准教条不相容。我们指出，这是宇宙流体应力-能量张量标准分解的结果，如果暗能量中存在弹性刚性，则不必假定转动不变性。实现这一点所需的暗能量可能是由P/{Rho}=-2/3的点对称磁区壁网络提供的，尽管这个概念更一般。我们参考一个具有立方对称性的模型来说明这一点，并讨论了该模型的各个方面。
A variety of observational tests seem to suggest that the Universe is anisotropic. This is incompatible with the standard dogma based on adiabatic, rotationally invariant perturbations. We point out that this is a consequence of the standard decomposition of the stress-energy tensor for the cosmological fluids, and that rotational invariance need not be assumed, if there is elastic rigidity in the dark energy. The dark energy required to achieve this might be provided by point symmetric domain wall network with P/{rho}=-2/3, although the concept is more general. We illustrate this with reference to a model with cubic symmetry and discuss various aspects of the model.