论文标题
虚假暗物质
Disformal Dark Matter
论文作者
论文摘要
我们将暗物质的生产推广到一个两米框架，从而将物理指标（将其与标准模型（SM）耦合在一起）与控制引力动力学的度量标准和/或错误相关。我们表明，这种设置自然存在于许多超紫罗兰色（UV）结构中，从KählerModuli字段到张量 - 门户模型，从紧急引力到超级重力模型。在这种情况下，我们研究了早期宇宙中的暗物质产生，这是由于热浴和辐射衰减的两个散射而产生的。我们还考虑到通货膨胀结束时的非实用性再加热效果。在这种情况下，暗物质是由于标量场的产生介导了与SM的共形/异常相互作用，即实现一个微弱的相互作用物质粒子（FIMP）场景，在这种情况下，标量与SM之间相互作用的抑制规模几乎可以与Planck量表中的Planck量表一样高。
We generalize dark matter production to a two-metric framework whereby the physical metric, which couples to the Standard Model (SM), is conformally and/or disformally related to the metric governing the gravitational dynamics. We show that this setup is naturally present in many Ultra Violet (UV) constructions, from Kähler moduli fields to tensor-portal models, and from emergent gravity to supergravity models. In this setting we study dark matter production in the early Universe resulting from both scatterings off the thermal bath and the radiative decay of the inflaton. We also take into account non-instantaneous reheating effects at the end of inflation. In this context, dark matter emerges from the production of the scalar field mediating the conformal/disformal interactions with the SM, i.e. realising a Feebly Interacting Matter Particle (FIMP) scenario where the suppression scale of the interaction between the scalar and the SM can be taken almost as high as the Planck scale in the deep UV.
