再加热过程中具有量子修正暴胀子势的自共振产生的引力波
Gravitational waves from self-resonance during reheating with a quantum-corrected inflaton potential
AI总结：
研究暴胀子势的量子修正对预热动力学及引力波谱的影响，通过分析α吸引子T模型及晶格模拟计算谱，发现其信号在超高频区，结果或可探测量子修正，提供紫外物理间接信息。
AI中文摘要：
我们研究了对暴胀子势的局域量子修正如何影响预热动力学以及由此产生的随机引力波（GW）谱。当这些修正充分抑制势在其最小值附近的二次项时，暴胀子自共振可产生峰值GW谱。另一方面，我们发现如果二次项获得负系数，则会出现平滑且增强的谱。作为具体实现，我们分析了由重标量引起的具有单圈科尔曼 - 温伯格修正的α吸引子T模型，并使用晶格模拟计算了由此产生的GW谱。GW信号处于kHz范围以上的超高频区域。这些结果表明，预热产生的GW信号可能探测对暴胀子势的量子修正，从而提供有关潜在紫外物理的间接信息。
英文摘要：
We investigate how localized quantum corrections to the inflaton potential affect preheating dynamics and the resulting stochastic gravitational wave (GW) spectrum. When these corrections sufficiently suppress the quadratic term of the potential near its minimum, inflaton self-resonance can produce a peaked GW spectrum. On the other hand, we find that a smooth and enhanced spectrum can appear if the quadratic term acquires a negative coefficient. As a concrete realization, we analyze the $α$-attractor T-model with a one-loop Coleman--Weinberg correction induced by a heavy scalar and compute the resulting GW spectra using lattice simulations. The GW signals lie in the ultra-high-frequency regime at frequencies above the kHz range. These results suggest that GW signals from preheating may probe quantum corrections to the inflaton potential, thereby providing indirect information about the underlying UV physics.
