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arXiv 1306.3021gr-qcastro-ph.CO
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无迹爱因斯坦方程与暴胀

The Trace-Free Einstein Equations and inflation

George F R Ellis

摘要:

爱因斯坦引力方程的无痕版本,本质上等同于单模引力,可以解决量子场论对真空能量密度的估计与天文学观测到的宇宙学常数之间的巨大差异这一令人不安的问题。然而,有人提出,这一建议是行不通的,因为它阻止了暴胀子势能驱动暴胀。这里表明,这种担心是不合理的:如果我们采用无迹引力方程,暴胀照常进行。

英文摘要:

The trace-free version of the Einstein Gravitational equations, essentially equivalent to unimodular gravity, can solve the troubling issue of the huge discrepancy between quantum field theory estimates of the vacuum energy density and the astronomically observed value of the cosmological constant. However it has been suggested that this proposal cannot work because it prevents the inflaton potential energy from driving inflation. It is shown here that that concern is unjustified: inflation proceeds as usual if we adopt the trace free gravitational equations.

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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