What Is a Black Hole?

Abstract

Although black holes are objects of central importance across many fields of physics, there is no agreed upon definition for them, a fact that does not seem to be widely recognized. Physicists in different fields conceive of and reason about them in radically different, and often conflicting, ways. All those ways, however, seem sound in the relevant contexts. After examining and comparing many of the definitions used in practice, I consider the problems that the lack of a universally accepted definition leads to, and discuss whether one is in fact needed for progress in the physics of black holes. I conclude that, within reasonable bounds, the profusion of different definitions is in fact a virtue, making the investigation of black holes possible and fruitful in all the many different kinds of problems about them that physicists consider, although one must take care in trying to translate results between fields.

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Author's Profile

Erik Curiel
Ludwig Maximilians Universität, München

Citations of this work

On the Universality of Hawking Radiation.Sean Gryb, Patricia Palacios & Karim Thebault - 2019 - British Journal for the Philosophy of Science:axz025.

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References found in this work

Einstein and Singularities.John Earman & Jean Eisenstaedt - 1999 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 30 (2):185-235.

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