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arXiv 0711.0220gr-qc
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真空与宇宙学常数问题

The Vacuum and the Cosmological Constant Problem

Gerald E. Marsh

摘要:

这里我们要讨论的是,宇宙学常数问题的存在是因为真空在量子场论中的定义方式。一段时间以来,人们已经知道,QFT是规范不变的某些条款-如真空极化张量的一部分-必须明确消除或通过某种形式的正则化,然后再重整化。最近的研究表明,缺乏规范不变性是真空定义方式的结果,重新定义真空使理论是规范不变性的也可能提供宇宙学常数问题的解决方案。

英文摘要:

It will be argued here that the cosmological constant problem exists because of the way the vacuum is defined in quantum field theory. It has been known for some time that for QFT to be gauge invariant certain terms--such as part of the vacuum polarization tensor--must be eliminated either explicitly or by some form of regularization followed by renormalization. It has recently been shown that lack of gauge invariance is a result of the way the vacuum is defined, and redefining the vacuum so that the theory is gauge invariant may also offer a solution to the cosmological constant problem.

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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