Critical phenomena and relativistic gravitational collapse |
| |
Authors: | Andrew M. Abrahams Charles R. Evans |
| |
Affiliation: | (1) Center for Radiophysics and Space Research, Cornell University, 14853 Ithaca, New York, USA;(2) Department of Physics and Astronomy, University of North Carolina, 27599 Chapel Hill, North Carolina, USA |
| |
Abstract: | Recent calculations have shown the existence of critical phenomena in general relativity associated with the collapse of wavepackets of massless fields that are near, in parameter space, the onset of black hole formation (the critical point). Two physically distinct systems have been explored: collapse of spherically-symmetric massless scalar field and collapse of vacuum, axisymmetric gravitational waves. Nonlinear effects dominate near the critical point. Black-hole mass serves as an order parameter and has a power-law dependence on critical separation in the supercritical region of parameter space. Remarkably, the values of the critical exponent of the power law are nearly identical in the two systems. The nonlinearity induces the fields to oscillate. Each successive oscillation is an echo, obeying a spatial and temporal scaling relation. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|