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arXiv 0704.1035gr-qchep-th
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具有约束势的各向异性膜引力

Anisotropic brane gravity with a confining potential

M. Heydari-Fard, H. R. Sepangi

摘要:

我们考虑一个各向异性的膜世界Bianchi型I和V的几何形状的机制,限制膜上的物质是通过使用一个封闭的潜力。在各向异性膜上得到的方程被一个可以解释为x物质的额外项修改,为宇宙的加速膨胀提供了一个可能的唯象解释。我们获得了场方程的一般解的精确参数形式的Bianchi型I和V时空。在比安基I型的特殊情况下,场方程的解以精确的解析形式得到。最后,我们研究了观测上重要参数的行为。

英文摘要:

We consider an anisotropic brane world with Bianchi type I and V geometries where the mechanism of confining the matter on the brane is through the use of a confining potential. The resulting equations on the anisotropic brane are modified by an extra term that may be interpreted as the x-matter, providing a possible phenomenological explanation for the accelerated expansion of the universe. We obtain the general solution of the field equations in an exact parametric form for both Bianchi type I and V space-times. In the special case of a Bianchi type I the solutions of the field equations are obtained in an exact analytic form. Finally, we study the behavior of the observationally important parameters.

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