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Physics

Exotic cosmic objects in string theory may look like leaky black holes

Physicists have simulated strange objects from string theory to determine what they look like – if they exist, they could be mistaken for a black hole when imaged from very far away

By Karmela Padavic-Callaghan

28 April 2023

A topological soliton could be a black hole copycat

Pierre Heidmann/Johns Hopkins University

A strange cosmic object described by string theory could be mistaken for an ordinary black hole from far away. If these objects do exist, they could solve a long-standing paradox about black holes.

The object is known as a topological soliton – a region where space-time itself warps and forms a hole that light can fall into, like sliding down a space-time hill. In a two-dimensional space-time, this object would resemble a donut that traps light in its hole. However, string theory …

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