论文标题
违反非最低通货膨胀缓慢的行动
Violation of slow-roll in non-minimal inflation
论文作者
论文摘要
我们表明，与重力的非最小耦合不仅可以使某些与宇宙学数据一致的通货膨胀模型，类似于希格斯通货膨胀的情况，而且还可以调用缓慢的违规行为以实现从通货膨胀中的优雅退出。特别是，在模型中，这种情况是这种情况，即当模型最小化与重力耦合时，应假定通货膨胀的稳定机制。作为明确的例子，我们考虑了与重力非最小耦合的幂律和逆单膨胀模型。尽管这些模型在最小耦合的情况下被排除在外，但我们表明它们可以在非最小耦合方案中再次变得可行。在大多数情况下，我们考虑过，可以通过重力颗粒的产生自然地实现再加热，但这取决于以非平凡的方式重力理论。
We show that a non-minimal coupling to gravity can not only make some inflationary models consistent with cosmological data, similar to the case of Higgs inflation, but can also invoke slow-roll violation to realize graceful exit from inflation. In particular, this is the case in models where a destabilizing mechanism that ends inflation should be assumed when the model is minimally coupled to gravity. As explicit examples, we consider the power-law and inverse monomial inflation models with a non-minimal coupling to gravity. While these models are excluded in the minimally coupled case, we show that they can become viable again in non-minimally coupled scenarios. In most scenarios we considered, reheating can be naturally realized via gravitational particle production but that this depends on the underlying theory of gravity in a non-trivial way.
