标题： 摄动精灵机制能否产生可观测的引力波？ 显示英文标题

标题： Can the poltergeist mechanism produce observable GWs?

摘要： 由于早期物质主导阶段到辐射主导阶段的突然转变，诱导引力波（GWs）的增强发生。 我们分析了转变速率对标量势的影响。 我们发现有限的转变持续时间会抑制标量势的振荡幅度，从而抑制引力波能量谱的幅度。 通过数值求解背景和扰动方程，我们证明了那些基于物理动机的模型，例如原初黑洞蒸发和Q球衰变，无法产生可观测的引力波信号。 显示英文摘要

摘要： The enhancement of induced gravitational waves (GWs) occurs due to a sudden transition from an early matter-dominated era to the radiation-dominated era. We analyze the impact of the transition rate on the scalar potential. We find that the finite transition duration suppresses the oscillation amplitude of the scalar potential, consequently suppressing the amplitude of the GW energy spectrum. By numerically solving the background and perturbation equations, we demonstrate that the physically motivated models, such as the evaporation of primordial black holes and the decay of Q-balls, cannot produce an observable GW signal.