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- W1935687098 abstract "We study gravitational collapse of a spherical fluid in nonrelativistic general covariant theory of the Hov{r}ava-Lifshitz gravity with the projectability condition and an arbitrary coupling constant $lambda$, where $|lambda - 1|$ characterizes the deviation of the theory from general relativity in the infrared limit. The junction conditions across the surface of a collapsing star are derived under the (minimal) assumption that the junctions be mathematically meaningful in terms of distribution theory. When the collapsing star is made of a homogeneous and isotropic perfect fluid, and the external region is described by a stationary spacetime, the problem reduces to the matching of six independent conditions. If the perfect fluid is pressureless (a dust fluid), it is found that the matching is also possible. In particular, in the case $lambda = 1$, the external spacetime is described by the Schwarzschild (anti-) de Sitter solution written in Painlev'e-Gullstrand coordinates. In the case $lambda not= 1$, the external spacetime is static but not asymptotically flat. Our treatment can be easily generalized to other versions of Hov{r}ava-Lifshitz gravity or, more generally, to any theory of higher-order derivative gravity." @default.
- W1935687098 created "2016-06-24" @default.
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- W1935687098 date "2013-07-24" @default.
- W1935687098 modified "2023-10-18" @default.
- W1935687098 title "Gravitational collapse in Hořava-Lifshitz theory" @default.
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- W1935687098 doi "https://doi.org/10.1103/physrevd.88.024044" @default.
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