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arXiv 1302.2850quant-ph
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泛路径积分

The universal path integral

Seth Lloyd, Olaf Dreyer

摘要:

路径积分是量子化的一条强有力的途径:它们通过对变量的经典构型(如场)求和来计算概率,并为每个构型分配一个与该构型的作用相等的相位。本文定义了一个通用的路径积分,它对所有可计算结构求和.这个路径积分包含所有可能的可计算路径积分作为子积分,包括场论、基本粒子的标准模型、量子引力的离散模型、弦论等。通用的路径积分拥有一个定义明确的度量,保证其有限性,以及一种提取可观测量概率的方法。普适路径积分支持宇宙的量子理论,在这个理论中,我们所看到的周围世界是由所有可计算结构之间的干涉产生的。

英文摘要:

Path integrals represent a powerful route to quantization: they calculate probabilities by summing over classical configurations of variables such as fields, assigning each configuration a phase equal to the action of that configuration. This paper defines a universal path integral, which sums over all computable structures. This path integral contains as sub-integrals all possible computable path integrals, including those of field theory, the standard model of elementary particles, discrete models of quantum gravity, string theory, etc. The universal path integral possesses a well-defined measure that guarantees its finiteness, together with a method for extracting probabilities for observable quantities. The universal path integral supports a quantum theory of the universe in which the world that we see around us arises out of the interference between all computable structures.

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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