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arXiv 1002.0510astro-ph.COhep-th
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超光速的精髓和天空中的首选方向

Tachyonic Quintessence and a Preferred Direction in the Sky

Luca Grisa, Lorenzo Sorbo

摘要:

我们表明,精髓,当它被描述的超光速场,可以放大一个微小的原始梯度产生一个首选的方向在天空中。在最简单的实现中,这种机制只影响四极水平的宇宙微波背景波动。我们简要讨论如何更高的多极子也可以受到影响,一旦考虑到的精粹潜力的完整结构。

英文摘要:

We show that quintessence, when it is described by a tachyonic field, can amplify a tiny primordial gradient generating a preferred direction in the sky. In its simplest realization, this mechanism only affects the Cosmic Microwave Background fluctuations at the quadrupole level. We briefly discuss how higher multipoles can also be affected, once the full structure of the quintessence potential is taken into account.

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