基于非形式度规的双提升向量宇宙学
Doubly-boosted vector cosmologies from disformal metrics
摘要：
采用系统动力系统方法研究了各向异性Bianchi I宇宙的宇宙学，其中假设一个矢量场作用于一个非形式标架。该研究得到了一些新的不动点，其中各向异性尺度解。在简化的假设（几乎）恒定斜率的潜力，这些要么不是稳定的吸引子，不描述加速膨胀，否则他们的功能太大的各向异性，是与观测兼容。尽管如此，有些解确实对宇宙学应用有吸引力，因为由于矢量场的快速振荡，各向同性得以保留。
英文摘要：
A systematic dynamical system approach is applied to study the cosmology of anisotropic Bianchi I universes in which a vector field is assumed to operate on a disformal frame. This study yields a number of new fixed points, among which anisotropic scaling solutions. Within the simplifying assumption of (nearly) constant-slope potentials these are either not stable attractors, do not describe accelerating expansion or else they feature too large anisotropies to be compatible with observations. Nonetheless, some solutions do have an appeal for cosmological applications in that isotropy is retained due to rapid oscillations of the vector field.
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