On Black Holes in String Theory
نویسنده
چکیده
from which the global properties can be understood. Here r(u, v) and w(u, v) are certain functions whose details are not so material. The important properties come from the singularities at uv = 1. There are two branches of this singularity, as u and v may be both negative or both positive. The “physical region” is the region uv < 1 between the two singularities. The branch of the singularity with u, v < 0 is the “white hole” singularity; it is to the past of the physical region, and can emit but not absorb matter. The branch of the singularity with u, v > 0 is the “black hole” singularity; being to the future of the physical region, it can
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