FRW universe in the laboratory

FRW universe in the laboratory
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实验室中的 FRW 宇宙

DOI:
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发表时间:
2013
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影响因子:
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通讯作者:
D. Tolic
D. Tolic
中科院分区:
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文献类型:
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作者:
N. Bilić;D. Tolic

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我们考虑球对称的膨胀相对论流体作为模拟Friedmann-Robertson-Walker(FRW)时空的模型。在相对论声学几何的框架下,我们演示了如何模拟具有正、零或负空间曲率的任意FRW时空。在拉格朗日描述中,我们证明了一个特定的FRW时空是通过选择适当的势来获得的。我们讨论了几个例子,特别是具有正负空间曲率的坐标表示中的模拟De Sitter时空。
We consider an expanding relativistic fluid with spherical symmetry as a model for an analog Friedmann-Robertson-Walker (FRW) spacetime. In the framework of relativistic acoustic geometry we demonstrate how to mimic an arbitrary FRW spacetime with positive, zero or negative spatial curvature. In the Lagrangian description we show that a particular FRW spacetime is obtained by choosing the appropriate potential. We discuss several examples and in particular the analog de Sitter spacetime in the coordinate representation with positive and negative spatial curvature.