We present the supersymmetric extension of the unified model for inflation and Dark Matter studied in ref.[1]. The scenario is based on the incomplete decay of the inflaton field into right-handed (s)neutrino pairs. By imposing a discrete interchange symmetry on the inflaton and the right-handed (s)neutrinos, one can ensure the stability of the inflaton field at the global minimum today, while still allowing it to partially decay and reheat the Universe after inflation. Compatibility of inflationary predictions, BBN bounds and obtaining the right DM abundance for the inflaton Dark Matter candidate typically requires large values of its coupling to the neutrino sector, and we use supersymmetry to protect the inflaton from potentially dangerous large radiative corrections which may spoil the required flatness of its potential. In addition, the inflaton will decay now predominantly into sneutrinos during reheating, which in turn give rise both to the thermal bath made of Standard Model particles, and inflaton particles. We have performed a thorough analysis of the reheating process following the evolution of all the partners involved, identifying the different regimes in the parameter space for the final Dark Matter candidate. This as usual can be a WIMP-like inflaton particle or an oscillating condensate, but we find a novel regime for a FIMP-likecandidate.

我们提出了参考文献 [1] 中研究的暴胀和暗物质统一模型的超对称扩展。该情景基于暴胀子场不完全衰减为右手（s）中微子对。通过对暴胀子和右手 (s) 中微子施加离散的交换对称性，可以确保暴胀子场在当今全球最小值处的稳定性，同时仍然允许暴胀子在暴胀后部分衰减和重新加热宇宙。暴胀预测的兼容性、BBN 界限和获得暴胀暗物质候选的正确 DM 丰度通常需要其与中微子扇区的较大耦合值，我们使用超对称性来保护暴胀免受潜在危险的大辐射修正，这可能会破坏所需的其潜力的平坦度。此外，暴胀子现在将在再加热过程中主要衰变为中微子，这反过来又会产生由标准模型粒子和暴胀子粒子组成的热浴。我们在所有相关合作伙伴的演变之后对再加热过程进行了彻底的分析，确定了最终暗物质候选者参数空间中的不同状态。像往常一样，这可以是类似 WIMP 的膨胀粒子或振荡的冷凝物，但我们为类似 FIMP 的候选物找到了一种新的机制。确定最终暗物质候选者参数空间中的不同状态。像往常一样，这可以是类似 WIMP 的膨胀粒子或振荡的冷凝物，但我们为类似 FIMP 的候选物找到了一种新的机制。确定最终暗物质候选者参数空间中的不同状态。像往常一样，这可以是类似 WIMP 的膨胀粒子或振荡的冷凝物，但我们为类似 FIMP 的候选物找到了一种新的机制。