AI 中文总结
研究沼泽地猜想对弦模量非绝热动力学的影响,通过自共振预热视角,指出势局部曲率及轻态塔两个结构起关键作用,探讨它们如何影响快子共振及预热,揭示沼泽地物理控制势结构和随机修正影响预热。
AI 中文摘要
虽然沼泽地猜想的宇宙学意义通常在暴胀模型构建的背景下讨论,但它们也对暴胀后或弦模量任何位移后的剧烈非绝热动力学有影响。我们通过自共振预热的视角研究这个问题,指出两个受沼泽地启发的结构起核心作用。一是势的局部曲率,精细德西特猜想的快子分支挑出能驱动快子放大的负曲率类型,但局部曲率数据不够,势的大场渐近性决定模量如何采样不稳定区域,不同的势结构会导致不同共振效率,我们研究了多种模型中的快子共振。二是沼泽地距离猜想预测的轻态塔,将其有限子集建模为弦模量预热的有效随机环境,发现轻态主要通过涂抹、移动和轻微引发不稳定性来重塑现有共振带,而非开启新的有力预热通道。我们的结果表明,沼泽地物理通过控制势的确定性曲率结构以及来自涌现轻态的随机修正来影响预热。
英文摘要
While the cosmological implications of the Swampland Conjectures are usually discussed in the context of inflationary model building, they also have implications for the violent, non-adiabatic dynamics that can follow inflation or any displacement of string moduli. We study this question through the lens of self-resonant preheating, where we point out that two Swampland motivated structures play central roles. The first is the local curvature of the potential: the tachyonic branch of the refined de Sitter Conjecture singles out the kind of negative curvature that can drive tachyonic amplification. We show, however, that local curvature data is not enough; the large field asymptotics of the potential determines how the modulus samples the unstable region. Thus, plateaus, barriers, and runaways can lead to different resonance efficiencies; we study tachyonic resonance for bulk moduli in LVS and KKLT compactifications, as well as for typical blow-up moduli potentials and alpha-attractor models. The second Swampland motivated structure pertains to the tower of light states predicted by the Swampland Distance Conjecture. Modeling a finite subset of such states as an effective stochastic environment within which a string modulus preheats, we find that the light states mainly reshape existing resonance bands by smearing, shifting, and mildly seeding instabilities, rather than opening a robust new reheating channel. Our results suggest that Swampland physics affects preheating by controlling both the deterministic curvature structure of the potential as well as stochastic corrections from emergent light states.
Comments37 pages, 18 figures