Caustics for spherical waves
Caustics for spherical waves
复制标题
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
中科院分区:
文献类型:
--
作者:
C. Rham;H. Motohashi
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.
影响因子:
5
作者:
Contaldi, Carlo R.;Wiseman, Toby;Withers, Benjamin
通讯作者:
Withers, Benjamin