Cosmology with Mimetic Matter
Cosmology with Mimetic Matter
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DOI：
10.1088/1475-7516/2014/06/017
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发表时间：
2014-06-01
影响因子：
6.4
通讯作者：
Vikman, Alexander
中科院分区：
文献类型：
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作者：
Chamseddine, Ali H.;Mukhanov, Viatcheslav;Vikman, Alexander
我们认为最近提出的模拟暗物质的最小扩展，并表明，通过引入一个潜在的模拟非动力学标量场，我们可以模仿几乎任何正常物质的引力特性。特别是拟物质可以提供暴胀子、精华，甚至可以导致一个跳跃的非奇异宇宙。我们还研究了由于模拟物质的宇宙学扰动的行为。我们证明了简单的模拟通货膨胀可以产生红倾斜的标量扰动，这在很大程度上增强了重力波。
We consider minimal extensions of the recently proposed Mimetic Dark Matter and show that by introducing a potential for the mimetic non-dynamical scalar field we can mimic nearly any gravitational properties of the normal matter. In particular, the mimetic matter can provide us with inflaton, quintessence and even can lead to a bouncing nonsingular universe. We also investigate the behaviour of cosmological perturbations due to a mimetic matter. We demonstrate that simple mimetic inflation can produce red-tilted scalar perturbations which are largely enhanced over gravity waves.