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arXiv 0705.2299hep-phastro-ph.COgr-qc
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T_{μν}的时间演化与宇宙学常数问题

Time evolution of T_{μν} and the cosmological constant problem

V. Branchina, D. Zappalà

摘要:

我们研究了宇宙时间演化的有效量子场论能量动量张量T_{μν},并表明,作为一个后果的有效性质的理论,结构的T_{μν}是这样的真空能量随时间而减少。我们发现,目前的零点能量被宇宙演化所淘汰。这一发现的影响的宇宙学常数的问题进行了调查。

英文摘要:

We study the cosmic time evolution of an effective quantum field theory energy-momentum tensor T_{μν} and show that, as a consequence of the effective nature of the theory, the structure of T_{μν} is such that the vacuum energy decreases with time. We find that the zero point energy at present time is washed out by the cosmological evolution. The implications of this finding for the cosmological constant problem are investigated.

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