I propose a new model of preinflation, where the universe suffers a transition from an initial stable state [such that the universe is initially at the minimum of a $\varphi$-quartic potential: $V\left(\varphi \right)\sim {\varphi }^4$], to an unstable evolving state that drives the initial accelerated expansion. Using Relativistic Quantum Geometry (RQG), I demonstrate that back-reaction produced by the inflaton field fluctuations should be responsible for an additional term in the effective scalar potential. These fluctuations are very strong, and should cause the initial expansion of the universe when self-interactions of the inflaton fluctuations are included in its dynamics, even though it is initially in a stable state. The equation of state evolves from $\omega =-1∕3$ to $\omega \lesssim -1$ and slow-roll conditions become naturally at the end of preinflation.

我提出了一种新的预充气模型，其中宇宙经历了从初始稳定状态的过渡[使得宇宙最初处于最小稳定状态 $\varphi$-四次方潜力： $V（\varphi ）〜{\varphi }^4$]，进入不稳定的演化状态，从而驱动最初的加速扩展。使用相对论量子几何（RQG），我证明了由充气子场波动产生的反向反应应负责有效标量势的附加项。这些涨落非常强烈，当充气子涨落的自相互作用包括在动力学中时，即使它最初处于稳定状态，也应引起宇宙的初始膨胀。状态方程式从$\omega =-\mathrm{1个}∕3$ 至 $\omega \lesssim -\mathrm{1个}$ 通货膨胀结束后，慢摇条件自然成为自然。