论文标题

宇宙常数的非本地合作伙伴

Non-local partner to the cosmological constant

论文作者

Donoghue, John F.

论文摘要

我表明,由于巨大的粒子而引起的量子校正在引力有效作用中产生非局部项,该作用在衍生物膨胀中是零阶的,就像宇宙常数一样。它具有固定系数,该系数比宇宙常数大得多,并且不能微调。相互作用在粒子质量上方的尺度上具有活性。这是$ m^4(\ frac1 {\ box} r)_x“ <x | \ log(\ box +m^2)| y>”(\ frac1 {\ box} r)_y $,我讨论$的含义$“

I show that quantum corrections due to a massive particle generates a non-local term in the gravitational effective action which is of zeroth order in the derivative expansion, much like the cosmological constant. It carries a fixed coefficient which is very much larger than the cosmological constant, and which cannot be fine-tuned. The interaction is active at scales above the particle's mass. This is of the form $m^4 (\frac1{\Box}R)_x "<x|\log (\Box +m^2 )|y >" (\frac1{\Box}R)_y$, and I discuss the meaning of $ "<x|\log (\Box +m^2) |y >" $ and other aspects of its interpretation.

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