通过再加热调和非最小耦合Higgs膨胀与ACT DR6观测
Reconciling Nonminimally Coupled Higgs Inflation with ACT DR6 Observations through Reheating
AI总结：
本文通过引入再加热效应，使非最小耦合Higgs膨胀模型与ACT DR6观测数据一致，发现再加热方程状态参数需满足特定条件以符合大爆炸核合成要求。
摘要：
非最小耦合Higgs膨胀模型尽管在ACT DR6观测数据中不被青睐，但通过考虑再加热效应可以与ACT DR6数据调和。本文研究了恒定方程状态参数$w_{re}$的再加热过程。对于强耦合情况$ξ=100$，要求$w_{re} \geq 0.92$以满足ACT DR6约束和大爆炸核合成所需最小再加热温度。具体而言，当$w_{re} = 0.92$时，再加热$e$-折叠数需为$N_{re}=28.3$，而当$w_{re}=1$时，$N_{re}$在$24.9 \leq N_{re} \leq 27.2$范围内。在不假设强耦合极限的一般情况下，非最小耦合需满足$ξ\geq 0.05$以同时满足ACT和BBN要求。研究发现，考虑再加热后，多种膨胀模型如$R^2$膨胀、山峰膨胀、E模型膨胀和T模型膨胀均可与ACT DR6观测数据一致。
英文摘要：
The Higgs inflation model with nonminimal coupling, while disfavored by the 1$σ$ region of the latest Atacama Cosmology Telescope Data Release 6 (ACT DR6) observational data, can be reconciled with the ACT DR6 data by incorporating the effects of reheating. In this paper, we consider reheating with a constant equation of state $w_{re}$. For the strong coupling case $ξ=100$, we find that reconciling the model with both the ACT DR6 constraints and the minimum reheating temperature required for successful Big Bang Nucleosynthesis (BBN) demands $w_{re} \geq 0.92$. Specifically, the reheating $e$-folding number must be $ N_{ re}= 28.3$ for $w_{ re} = 0.92$, and within $24.9 \leq N_{ re} \leq 27.2$ for $w_{ re} = 1$. In the more general case without assuming the strong coupling limit, consistency with both ACT and BBN requires the nonminimal coupling to satisfy $ξ\geq 0.05$. Our findings suggest that by considering reheating, a wide range of inflationary models, such as $R^2$ inflation, hilltop inflation, E-model inflation, and T-model inflation, can also be made consistent with the ACT DR6 observational data.
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。
