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arXiv 1701.08770gr-qchep-th
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描述驱动虫洞的奇异物质

Characterising exotic matter driving wormhole

Marco Chianese, Elisabetta Di Grezia, Mattia Manfredonia, Gennaro Miele

摘要:

在本文中,我们开发了一个迭代的方法来跨越整个套奇异物质模型能够驱动一个可穿越的虫洞。该方法的基础上,泰勒展开的度量和应力-能量张量分量在附近的虫洞喉,减少了爱因斯坦方程组的代数条件,可以满足订单的订单。这种方法很容易实现进一步的条件,将应力-能量张量分量相互联系起来,如对称条件或状态方程。然后,该方法被应用到一些相关的例子,其特征在于由一个恒定的能量密度的外来物质,也表现出各向同性的行为,在应力-能量张量或服从一个五重态方程。

英文摘要:

In this paper, we develop an iterative approach to span the whole set of exotic matter models able to drive a traversable wormhole. The method, based on a Taylor expansion of metric and stress-energy tensor components in a neighbourhood of the wormhole throat, reduces the Einstein equations to an infinite set of algebraic conditions, which can be satisfied order by order. The approach easily allows the implementation of further conditions linking the stress-energy tensor components among each other, like symmetry conditions or equations of state. The method is then applied to some relevant examples of exotic matter characterised by a constant energy density and that also show an isotropic behaviour in the stress-energy tensor or obeying to a quintessence-like equation of state.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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