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Quantum singularity
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<p>The term quantum singularity is used to refer to many different phenomena in fiction. They often only approximate a <a href="/facts/Gravitational_singularity/BptlItux">gravitational singularity</a> in the scientific sense in that they are massive, localized distortions of space and time. The name invokes one of the most fundamental problems remaining in modern physics: the difficulty in uniting Einstein's <a href="/facts/Theory_of_relativity/qGHj3eTC">theory of relativity</a>, which includes singularities within its models of <a href="/facts/Black_hole/1r2lmkcF">black holes</a>, and <a href="/facts/Quantum_mechanics/BRc3Mzgr">quantum mechanics</a>. In fact, since according to relativity, singularities, by definition, are infinitely small, and expected to be quantum mechanical by nature, a theory of <a href="/facts/Quantum_gravity/t7whBMNE">quantum gravity</a> would be required to describe their behavior. No such theory has yet been formulated. </p>