论文标题
表征通货膨胀后的再加热历史，第二部分：多个互动的女儿领域
Characterizing the post-inflationary reheating history, Part II: Multiple interacting daughter fields
论文作者
论文摘要
我们通过二次 - Quadratic-Quadratic互动$ g_n^2 ϕ = 2 x_n^2 $来表征与多个相互作用的女子场$ x_n $（$ n = 1，\ dots n_d $）的通电后动力学$ x_n $（$ n = 1，\ dots n_d $）。我们假设最低限度的单一元音潜力$ v（ϕ）\ propto | ϕ |^p $（$ p \ geq 2 $）。通过在2+1维晶格中模拟该系统，我们从通货膨胀结束到实现固定状态，研究状态能量分布和状态方程的通货膨胀后演变。我们表明，在这种情况下，转移到女儿野外部门的能量可能大于$ 50 \％$，以这种方式超过以前在单个女儿野外模型中找到的上限。特别是，对于$ p \ geq 4 $，很晚的能量在所有字段之间平均分布，只有$ 100/（n_d + 1）\％$ $ $ $保留在Eftraton中。我们还考虑了女儿领域具有无尺度交互的场景$λ_{nm} x_n^2 x_m^2 $，包括四分之一的女儿野外自我相互作用（$ n = m $）。我们表明，这些相互作用触发了非线性政权期间的共振过程，在单个女儿野外案例中，它已经允许以$ p \ geq 4 $的价格从Inforton中耗尽超过50美元的能源。
We characterize the post-inflationary dynamics of an inflaton $ϕ$ coupled to multiple interacting daughter fields $X_n$ ($n=1,\dots N_d$) through quadratic-quadratic interactions $g_n^ 2ϕ^2 X_n^2$. We assume a monomial inflaton potential $V(ϕ) \propto |ϕ|^p$ ($p \geq 2$) around the minimum. By simulating the system in 2+1-dimensional lattices, we study the post-inflationary evolution of the energy distribution and equation of state, from the end of inflation until a stationary regime is achieved. We show that in this scenario, the energy transferred to the daughter field sector can be larger than $50\%$, surpassing this way the upper bound found previously for single daughter field models. In particular, for $p \geq 4$ the energy at very late times is equally distributed between all fields, and only $100/(N_d + 1) \%$ of the energy remains in the inflaton. We also consider scenarios in which the daughter fields have scale-free interactions $λ_{nm} X_n^2 X_m^2$, including the case of quartic daughter field self-interactions (for $n=m$). We show that these interactions trigger a resonance process during the non-linear regime, which in the single daughter field case already allows to deplete more than $50\%$ of the energy from the inflaton for $p\geq 4$.
