Lovelock引力中的Shock waves和Birkhoff定理
Shock waves and Birkhoff's theorem in Lovelock gravity
摘要：
在Lovelock引力中存在球对称激波。它们相当于球对称解在零超曲面上的分支的变化。讨论了它们的存在对Birkhoff定理在理论中地位的影响。
英文摘要：
Spherically symmetric shock waves are shown to exist in Lovelock gravity. They amount to a change of branch of the spherically symmetric solutions across a null hypersurface. The implications of their existence for the status of Birkhoff's theorem in the theory is discussed.
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