The similarity hypothesis in general relativity

摘要: Self-similar models are important in general relativity and other fundamental theories. In this paper we shall discuss the “similarity hypothesis”, which asserts that under a variety of physical circumstances solutions these theories will naturally evolve to self-similar form. We find there is good evidence for context both spatially homogenous inhomogeneous cosmological models, although some cases model only an intermediate attractor. There also wide situations, including critical phenomena, spherically symmetric tend towards self-similarity. However, does not happen all it understand prerequisites conjecture.