在温暖通货膨胀期间通过结过程产生暗物质
Katherine Freese1,2,3, Gabriele Montefalcone1, Barmak Shams Es Haghi1
1Texas Center for Cosmology and Astroparticle Physics, Weinberg Institute for Theoretical Physics, Department of Physics, <a href="https://ror.org/00hj54h04">The University of Texas at Austin</a>, Austin, Texas 78712, USA.
Physical review letters
|December 6, 2024
概括
热膨胀,早期宇宙的一个理论,可以通过一种称为紫外结 (WIFI) 的过程产生暗物质 (DM). 与标准模型相比,这种方法显著提高了暗物质的产量,这可能解释了整个宇宙暗物质的丰富性.
科学领域:
- 宇宙学的宇宙学是什么?
- 粒子物理学 粒子物理学
- 天体物理学 天体物理学
背景情况:
- 暗物质的起源和丰富性仍然是宇宙学的重大未解决的问题.
- 膨胀宇宙学为了解早期宇宙的进化提供了一个框架.
- 紫外结是一种产生暗物质粒子的机制.
研究的目的:
- 为了研究在温暖膨胀过程中暗物质的产生.
- 为了探索"通过紫外线结" (WIFI) 机制的热膨胀.
- 将WIFI的暗物质产量与传统的结场景进行比较.
主要方法:
- 使用热膨胀 (WI) 模型与持续的热浴.
- 分析非重规范化的相互作用,将暗物质与热浴相合.
- 将WIFI中的暗物质产量与辐射主导 (RD) 紫外线结场景进行比较.
主要成果:
- 通过紫外线结 (WIFI) 的热膨胀可以产生大量的暗物质.
- 与RD UV freeze-in相比,WIFI中的暗物质产量显著增强.
- 增强强度很大程度上取决于不可重新规范化的运算符的质量维度,随着更高的维度而增加.
- 对于具有足够大的质量尺寸的运行者来说,膨胀期间的暗物质产生可以解释整个观察到的丰度.
- 观察到至少一个数量级 (第5维) 到18个数量级 (第10维) 的增强.
结论:
- 温暖通货膨胀为暗物质生产提供了一个可行的和高效的机制.
- 无线网络为产生暗物质的标准结模型提供了一个引人注目的替代方案.
- 这些发现表明,在通货膨胀期间生产其他宇宙学遗迹的潜在应用.
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