We present a novel mechanism for generating a cosmological constant and suitably sequestering the vacuum contribution to it, so that the eponymous cosmological constant problem is avoided. We do so by resorting to a model endowed with a non-minimal coupling between curvature and matter in an appropriately defined relaxed regime, and show that this shares features with both unimodular gravity as well as a recent proposal to sequester the vacuum contribution through the use of an external term to the action functional.

中文翻译：

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使用物质和曲率之间的非最小耦合来隔离宇宙常数

我们提出了一种产生宇宙常数并适当隔离对其的真空贡献的新机制，从而避免了同名的宇宙常数问题。我们通过在适当定义的松弛状态下诉诸曲率和物质之间具有非最小耦合的模型来做到这一点，并表明这与单模引力以及最近通过使用隔离真空贡献的提议共享特征动作泛函的外部术语。