调和宇宙学常数：B $^\flat$中的赋格
The Well-Tempered Cosmological Constant: Fugue in B$^\flat$
摘要：
量子场的零点涨落在任何时空中都会产生很大的宇宙学常数能量密度。那么，除了德西特空间之外，我们怎么能没有微调呢？良好的回火--利用场方程中的简并性来动态地抵消宇宙学常数--可以用低得多的能量状态来代替大的宇宙学常数。在这里，我们给出了一个明确的机制，以获得闵可夫斯基解决方案，取代宇宙学常数为零，并测试其吸引子的性质和持久性，通过真空相变。我们推导出Horndeski标量-张量引力必须具备的一般条件，并在函数的赋格中演化，以使宇宙是平坦的。
英文摘要：
Zero point fluctuations of quantum fields should generate a large cosmological constant energy density in any spacetime. How then can we have anything other than de Sitter space without fine tuning? Well tempering -- dynamical cancellation of the cosmological constant using degeneracy within the field equations -- can replace a large cosmological constant with a much lower energy state. Here we give an explicit mechanism to obtain a Minkowski solution, replacing the cosmological constant with zero, and testing its attractor nature and persistence through a vacuum phase transition. We derive the general conditions that Horndeski scalar-tensor gravity must possess, and evolve in a fugue of functions, to deliver nothing and make the universe be flat.
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。
