Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..aprc12001c&link_type=abstract
American Physical Society, April Meeting, Jointly Sponsored with the High Energy Astrophysics Division (HEAD) of the American As
Astronomy and Astrophysics
Astrophysics
Scientific paper
Over the past decade, numerical studies of the threshold of black hole formation in model problems of gravitational collapse have revealed a variety of intriguing phenomena. In particular, physics near the black hole threshold has generically been found to be characterized by additional symmetry, scaling laws and universality, in remarkable analogy to the critical behaviour seen in statistical mechanical systems. Although analysis of the mode structure of perturbations about the critical solutions has provided considerable insight into the observed phenomenology, many questions remain concerning critical collapse remain unanswered. Perhaps chief among these is the nature of the black hole threshold in non-spherically symmetric contexts, as the vast majority of studies have been performed within a spherically symmetric ansatz. In my talk I will review recent developments in critical collapse, including recent work on the axisymmetric collapse of scalar and gravitational waves, as well as some computations of non-gravitational collapse processes, such as the formation of "oscillons" in self-interacting scalar field theory.
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