| __Quantum Gravity Encyclopedia Article, Information, History and Biography @ InnerMan.com__ *(Site not responding. Last check: 2007-11-02)* |

| | Such a theory is required in order to understand those problems involving the combination of very large mass or energy and very small dimensions of space, such as the behavior of fl holes, and the origin of the universe. |

| | **Quantum** field theory on curved (non-Minkowskian) backgrounds, while not a **quantum** theory of **gravity**, has shown that some of the assumptions of **quantum** field theory cannot be carried over to curved spacetime, let alone to full-blown **quantum** **gravity**. |

| | Loop **quantum** **gravity** is the fruit of an effort to formulate a background-independent **quantum** theory. |

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