This just in: "Gravity's Rainbow" not just for English majors anymore

[Mark Wright]

http://phys.org/news/2015-01-black-holes-space-theory.html

In a new paper, physicists Ahmed Farag Ali, Mir Faizal, and Barun Majunder
have shown that, according to a new generalization of Einstein's theory
<http://phys.org/tags/theory/> of gravity
<http://phys.org/tags/gravity/> called
"gravity's rainbow," it is not possible to define the position of the event
horizon <http://phys.org/tags/event+horizon/> with arbitrary precision. If
the event horizon can't be defined, then the black hole itself effectively
does not exist.

"In gravity's rainbow, space <http://phys.org/tags/space/> does not exist
below a certain minimum length, and time does not exist below a certain
minimum time interval," Ali, a physicist at the Zewail City of Science and
Technology and Benha University, both in Egypt, told *Phys.org*. "So, all
objects existing in space and occurring at a time do not exist below that
length and time interval [which are associated with the Planck scale]. As
the event horizon is a place in space which exists at a point in time, it
also does not exist below that scale."
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