I am well aware that a number of physical models contain or predict(adsbygoogle = window.adsbygoogle || []).push({});

singularities. My question is: Is there any experimental evidence that

any singularity actually exists or are they all artifacts of the

models?

Lest someone jump right in with the singularity at the center of a

black hole, let me say that, although the various solutions of

Einstein's Equation have provided much useful guidance in

understanding the structure of the universe, as far as I know, the

center of a star or BH is outside of the range (or is it domain) of

applicability of the various solutions because they presume a non-zero

stress-energy tensor. In point of fact, we do not know what is in

there, we just know about the effects at and/or outside of the event

horizon.

It is my belief that there are no singularities in nature. I am

looking for evidence that I am wrong.

Note that renormalization in QED 'takes care of' the singularities,

i.e. they are not really there, just in an incomplete model. I suspect

that a comprehensive theory of quantum gravity may exhibit similar

behavior. Meanwhile, our ingenuity in constructing mathematical models

is less ingenious than Reality itself.

For your kind consideration,

George D. Freeman IV, aka

the softrat

Sometimes I get so tired of the taste of my own toes.

mailto:softrat@pobox.com

--

"Some students drink at the fountain of knowledge, some students

just gargle!" -- Navjot Singh Siddu

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# Is there a true singularity in nature?

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