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Feynman path integral in area tensor Regge calculus and correspondence principle

机译:张量Regge微积分中的Feynman路径积分和对应原理

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摘要

The quantum measure in area tensor Regge calculus can be constructed in such the way that it reduces to the Feynman path integral describing canonical quantisation if the continuous limit along any of the coordinates is taken. This construction does not necessarily mean that Lorentzian (Euclidean) measure satisfies correspondence principle, that is, takes the form proportional to e(iS) (e(-S)) where S is the action. Requirement to fit this principle means some restriction on the action, or, in the context of representation of the Regge action in terms of independent rotation matrices (connections), restriction on such representation. We show that the versions of this representation possible in 4 dimensions based on separate treatment of the selfdual and antiselfdual rotations allows to modify the derivation and give sense to the conditionally convergent integrals to implement both the canonical quantisation and correspondence principles. If configurations are considered such that the measure is factorisable into the product of independent measures on the separate areas (thus far it was just the case in our analysis), the considered modification of the measure does not effect the vacuum expectation values. (C) 2004 Elsevier B.V. All rights reserved.
机译:面积张量Regge演算中的量子度量可以通过以下方式构造:如果采用沿任意坐标的连续极限,则可以减少到描述经典量化的费曼路径积分。这种构造并不一定意味着洛伦兹(欧几里德)测度满足对应原理,即采取与e(iS)(e(-S))成比例的形式,其中S是作用。符合此原则的要求意味着对该动作进行某种限制,或者在以独立旋转矩阵(连接)表示Regge动作的上下文中,对该动作进行限制。我们表明,基于对偶和反对偶旋转的独立处理,可以在4维上表达此表示形式,从而可以修改导数并赋予条件收敛积分以实现规范的量化和对应原理。如果考虑配置以使度量可分解为独立区域中独立度量的乘积(因此,到目前为止,在我们的分析中只是这种情况),则考虑的度量修改不会影响真空期望值。 (C)2004 Elsevier B.V.保留所有权利。

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