Abstract

The spatial properties of the entrances to spherically symmetric black holes and wormholes with zero and positive masses are compared. The properties were studied in terms of bulk and brane. The explicit expressions for the entrances are found and it is shown that in both representations the spatial funnels of the entrances to the wormholes are the steepest for the Schwarzschild black holes, and the least steep for the wormholes with zero mass.

中文翻译：

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黑洞和虫洞入口的空间特性比较

摘要

比较了具有零质量和正质量的球形对称黑洞和虫洞的入口的空间特性。从膨松度和米糠方面研究了性能。找到了入口的显式表达式，结果表明，在两种表示形式中，虫洞入口的空间漏斗对于Schwarzschild黑洞来说最陡，对于质量为零的虫洞来说最不陡。