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arXiv quant-ph/0609023quant-phhep-th
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路径积分和边界条件

Path integrals and boundary conditions

M. Asorey, A. Ibort, G. Marmo

摘要:

量子力学的路径积分方法提供了一种直接从拉格朗日形式主义量子化动力系统的方法。在场论中,这种方法比哈密顿量子化有一些优点。Lagrange形式保持了相对论协变性,这使得Feynman方法在微扰和非微扰两种情况下都能很方便地实现场论的重整化。然而,当系统被限制在有界区域,我们将表明,路径积分方法不描述最一般类型的边界条件。高度非局部边界条件不能用费曼方法描述。本文分析了这个问题在量子力学中的起源及其对场论的影响。

英文摘要:

The path integral approach to quantum mechanics provides a method of quantization of dynamical systems directly from the Lagrange formalism. In field theory the method presents some advantages over Hamiltonian quantization. The Lagrange formalism preserves relativistic covariance which makes the Feynman method very convenient to achieve the renormalization of field theories both in perturbative and non-perturbative approaches. However, when the systems are confined in bounded domains we shall show that the path integral approach does not describe the most general type of boundary conditions. Highly non-local boundary conditions cannot be described by Feynman's approach. We analyse in this note the origin of this problem in quantum mechanics and its implications for field theory.

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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