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Why does a singularity have to exist? 
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#1
Jun1714, 05:10 PM

P: 2

Why, at the center of a black hole, does the need to be a point where spacetime curvature is infinite? I understand that black holes scale with consumed matter, and that the point has 0 density but how do we get infinite G?
I'm just an amateur but because this might just be a mathematical implication, and I'd love it if you threw an equation for me to try and pick apart. Also, why wouldn't a model without a singularity work? 


#2
Jun1714, 05:33 PM

Mentor
P: 11,599

The singularity is a result of the way the equations work out in General Relativity. Whether a singularity exists in real life is unknown. A number of people believe that the singularity is simply an artifact of our incomplete knowledge of physics at that scale and that a quantum theory of gravity would solve this problem.
Put simply, a singularity doesn't have to exist. It may or may not exist in reality. 


#3
Jun1714, 05:39 PM

Sci Advisor
P: 2,721

There is a very similar thread about this, only a few threads down: http://www.physicsforums.com/showthread.php?t=758146



#4
Jun1714, 05:42 PM

P: 2

Why does a singularity have to exist?
Yep I had posted in the wrong forum. Thanks!



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