Caustics for spherical waves

Caustics for spherical waves
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球面波的焦散

DOI:
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发表时间:
2016
期刊:
影响因子:
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通讯作者:
H. Motohashi
H. Motohashi
中科院分区:
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作者:
C. Rham;H. Motohashi

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我们研究焦散线的发展,在移位对称标量场理论的重点是简单的波与SO(p)$-对称性在任意数量的空间维度。我们表明,纯Galileon,DBI-Galileon,极端相对论Galileon自然出现作为一套独特的无焦散理论,突出简单的$SO(p)$波的无焦散条件和存在的全球伽利略对称性或全球(极端)相对论伽利略对称性之间的联系。
We study the development of caustics in shift-symmetric scalar field theories by focusing on simple waves with an $SO(p)$-symmetry in an arbitrary number of space dimensions. We show that the pure Galileon, the DBI-Galileon, and the extreme-relativistic Galileon naturally emerge as the unique set of caustic-free theories, highlighting a link between the caustic-free condition for simple $SO(p)$-waves and the existence of either a global Galilean symmetry or a global (extreme-)relativistic Galilean symmetry.
DOI: 10.1103/physrevd.78.044034
发表时间: 2008-08-01
期刊: PHYSICAL REVIEW D
影响因子: 5
作者:
Contaldi, Carlo R.;Wiseman, Toby;Withers, Benjamin
通讯作者: Withers, Benjamin