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arXiv 1003.2617gr-qchep-thmath-phmath.MP
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仿射量子引力的仿射

An Affinity for Affine Quantum Gravity

John R. Klauder

摘要:

仿射量子引力的主要原理是由局域度规算符的空间分量组成的矩阵\{ \hat g_{ab}(x)\}的严格正性。正则对易关系与此原理不相容,它们可以被非正则仿射对易关系所取代。由于量子引力约束的部分第二类性质,使用投影算子方法是有利的,它平等地对待所有量子约束。使用这种方法,强制执行的正则化版本的引力约束算子是很自然地制定为一个新的和相对定义良好的功能性积分,只涉及相同的一组变量,出现在通常的经典配方。虽然引力是不可重整化的微扰,但我们可以从一个核心的角度来理解引力,这对专门的模型是有价值的。

英文摘要:

The main principle of affine quantum gravity is the strict positivity of the matrix \{\hat g_{ab}(x)\} composed of the spatial components of the local metric operator. Canonical commutation relations are incompatible with this principle, and they can be replaced by noncanonical, affine commutation relations. Due to the partial second-class nature of the quantum gravitational constraints, it is advantageous to use the projection operator method, which treats all quantum constraints on an equal footing. Using this method, enforcement of regularized versions of the gravitational constraint operators is formulated quite naturally as a novel and relatively well-defined functional integral involving only the same set of variables that appears in the usual classical formulation. Although perturbatively nonrenormalizable, gravity may possibly be understood nonperturbatively from a hard-core perspective that has proved valuable for specialized models.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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