德西特背景上超对称量子场论中渐近态的谱抑制
Spectral Suppression of Asymptotic States in Supersymmetric QFT on de Sitter Backgrounds
- Universidad Ecotec（厄科特大学）
- INFN–Laboratori Nazionali di Frascati（意大利国家核物理研究所弗拉斯卡蒂国家实验室）
- Roma Tre University（罗马三大）
机构由 AI 辅助整理，请以论文原文为准。
AI总结：
本文在德西特背景超对称量子场论中提出一种结构性红外机制，通过长波引力涨落抑制极点留数并重分配谱权重，并在宇宙学层面进行条件性检验。
AI中文摘要：
我们研究了德西特背景上超对称量子场论中渐近粒子态的归宿，区分了代数场内容与局域化的类LSZ激发。我们研究了长波引力涨落如何抑制极点留数并将谱权重从孤立贡献重新分配至连续谱扇区。该分析在Kallen-Lehmann谱框架内进行，旨在作为一种结构性的红外机制，而非德西特量子引力的非微扰证明。本文发展了三个相互关联的层面。首先，我们分析了准德西特环境中的留数抑制及其通过汤川和引力相互作用的可能传递。其次，我们将谱分解表述为完整场论谱与可观测粒子扇区之间的映射。第三，我们考察了重新分配谱权重的条件性宇宙学实现，包括对膨胀、结构增长和引力透镜的可能影响。这一宇宙学层面是下游的现象学检验，并非用作极点消失的证据。在当前MCMC分析中，我们发现S8约为0.803，当平滑分数变化时，fS8 = 0.0025 +/- 0.0017，与基准值0.00262一致。这些结果检验了所提出实现的内在一致性，但并未确立暗扇区归属或底层红外机制。
英文摘要：
We investigate the fate of asymptotic particle states in supersymmetric quantum field theories on de Sitter backgrounds, distinguishing algebraic field content from localized LSZ-like excitations. We study how long-wavelength gravitational fluctuations may suppress pole residues and redistribute spectral weight from isolated contributions toward continuum sectors. The analysis is formulated within a Kallen-Lehmann spectral framework and is intended as a structural infrared mechanism rather than a non-perturbative proof of de Sitter quantum gravity. The paper develops three connected levels. First, we analyze residue suppression in a quasi-de Sitter setting and its possible transmission through Yukawa and gravitational interactions. Second, we formulate the spectral decomposition as a map between the full field-theoretic spectrum and the observable particle sector. Third, we examine a conditional cosmological realization of redistributed spectral weight, including possible effects on expansion, structure growth, and lensing. This cosmological layer is a downstream phenomenological test and is not used as evidence that pole loss has occurred. In the current MCMC analysis we find S8 approximately 0.803 and, when the smooth fraction is varied, fS8 = 0.0025 +/- 0.0017, consistent with the benchmark value 0.00262. These results test the internal consistency of the proposed realization but do not establish the dark-sector assignment or the underlying infrared mechanism.
