Critical phenomena in gravitational collapse (Physics Reports)

Details Critical phenomena in gravitational collapse (Physics Reports) Critical phenomena in gravitational collapse (Physics Reports)

2002-10-29

arxiv.org/abs/gr-qc/0210101v1

Phys.Rept.376:339-405,2003

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

LaTex, 65 pages, 7 eps figures

Scientific paper

10.1016/S0370-1573(02)00560-4

In general relativity black holes can be formed from regular initial data that do not contain a black hole already. The space of regular initial data for general relativity therefore splits naturally into two halves: data that form a black hole in the evolution and data that do not. The spacetimes that are evolved from initial data near the black hole threshold have many properties that are mathematically analogous to a critical phase transition in statistical mechanics. Solutions near the black hole threshold go through an intermediate attractor, called the critical solution. The critical solution is either time-independent (static) or scale-independent (self-similar). In the latter case, the final black hole mass scales as $(p-p_*)^\gamma$ along any one-parameter family of data with a regular parameter $p$ such that $p=p_*$ is the black hole threshold in that family. The critical solution and the critical exponent $\gamma$ are universal near the black hole threshold for a given type of matter. We show how the essence of these phenomena can be understood using dynamical systems theory and dimensional analysis. We then review separately the analogy with critical phase transitions in statistical mechanics, and aspects specific to general relativity, such as spacetime singularities. We examine the evidence that critical phenomena in gravitational collapse are generic, and give an overview of their rich phenomenology.

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