质量为 $m_χ$ 的冻结入暗物质（DM）通过轻暗光子（“最小冻结入 DM”）实现的参数空间，目前正通过电子和核反冲的直接探测实验进行探测。在 $10^{-2}~{\ m MeV} < m_χ< 10^3$ TeV 质量范围内探索 DM 产生，我们量化了量子统计和再加热动力学（超越瞬时再加热近似）对早期宇宙中 DM 产生的影响，特别是对宇宙状态方程和再加热期间标准模型浴温度标度的依赖。仔细研究了对应于物质主导和运动主导的特例。为了拟合整个观测到的 DM 遗迹丰度，低温再加热情景需要增加暗与可见扇区之间的耦合，这反过来扩大了已被测试的参数空间区域，并将在下一代直接探测实验中针对各种再加热情景进行探测。
英文摘要：
The parameter space of freeze-in dark matter (DM) with mass $m_χ$ through light dark photon (``minimal freeze-in DM'') is currently being probed by direct detection experiments through electron and nuclear recoil. Exploring the DM production in the mass range $10^{-2}~{\rm MeV} < m_χ< 10^3$ TeV, we quantify the impact of quantum statistics and the reheating dynamics (beyond the instantaneous reheating approximation) on the DM production in the early universe, in particular, the dependence on the cosmic equation of state and the scaling of the temperature of the Standard Model bath during reheating. Special cases corresponding to matter-domination and kination are carefully studied. To fit the entire observed DM relic abundance, low-temperature reheating scenarios require an increase in the coupling between dark and visible sectors which, in turn, enhances the regions of the parameter space that are already tested and will be probed by next-generation direct detection experiments for diverse reheating scenarios.
Freeze-in at Low Reheating and Direct Detection of Fermion Dark Matter
Ferdowsi University of Mashhad（马什哈德 Ferdowsi 大学）；Millennium Institute for Subatomic Physics at the High-Energy Frontier (SAPHIR)（高能前沿亚原子物理千年研究所 (SAPHIR)）
Freeze-in $SU(2)$ vector dark matter at low reheating temperature
Indian Association for the Cultivation of Science（印度科学培养印度协会）；Indian Institute of Technology Kharagpur（印度理工学院卡拉格普尔分校）；Tsung-Dao Lee Institute（李政道研究所）；Shanghai Jiao Tong University（上海交通大学）
Gravitational ultra-relativistic freeze-out during general reheating
Université Paris-Saclay（巴黎萨克雷大学）；CNRS/IN2P3, IJCLab（法国国家科学研究中心/欧洲核子研究委员会粒子物理研究所，IJCLab）；William I. Fine Theoretical Physics Institute, School of Physics and Astronomy, University of Minnesota（明尼苏达大学物理与天文学院威廉·I·芬理论物理研究所）；Theoretical Physics Division, Institute of High Energy Physics, Chinese Academy of Sciences（中国科学院高能物理研究所理论物理部）；China Center of Advanced Science and Technology（中国高等科学技术中心）
A Freeze-In Interpretation of the LZ High-Energy Nuclear Recoil Event
Georg-August-Universität Göttingen（哥廷根大学）；Dublin Institute for Advanced Studies（都柏林高等研究院）；Helsinki Institute of Physics, Gustaf Hällströmin katu 2a, FI-00014 Helsinki, Finland（赫尔辛基物理研究所）；Lund University（隆德大学）；Universidade de Aveiro（阿威罗大学）；Universidade do Minho（米尼奥大学）
Probing displaced (dark)photons from low reheating freeze-in at the LHC
Facultad de Ingeniería, Universidad San Sebastián（塞巴斯蒂安大学工程学院）；Millennium Institute for Subatomic Physics at the High-Energy Frontier (SAPHIR)（高能前沿亚原子物理千年研究所（SAPHIR））；Instituto de Física, Pontificia Universidad Católica de Chile（智利天主教大学物理研究所）；Instituto de Física, Facultad de Ciencias, Universidad de la República（共和国大学理学院物理研究所）；Sección Física, Departamento de Ciencias, Pontificia Universidad Católica del Perú（秘鲁天主教大学科学院物理组）
Warm fermionic dark matter from freeze-in at stronger coupling
Departamento de Física da Universidade de Aveiro（阿威罗大学物理系）；Laboratório de Instrumentação e Física Experimental de Partículas (LIP), Universidade do Minho（米尼奥大学粒子物理实验仪器实验室）
KEK Theory Center, IPNS, KEK（高能加速器研究机构理论中心，粒子核物理研究部）；Graduate Institute for Advanced Studies, SOKENDAI（综合研究大学院大学高等研究院）；Department of Physics, The University of Osaka（大阪大学物理学系）
Strongly interacting singlet scalar dark matter during reheating
LAPTh, CNRS, Université Savoie Mont-Blanc（拉普物理实验室，法国国家科学研究中心，萨瓦省蒙布朗大学）；New York University Abu Dhabi（纽约大学阿布扎比分校）；Skobeltsyn Institute of Nuclear Physics, Moscow State University（莫斯科国立大学斯科别尔钦核物理研究所）
FIMP dark matter in the scotogenic model at low-reheating temperatures
Institución Universitaria ITM（ITM大学）；Universidad de Antioquia UdeA（安蒂奥基亚大学）；Universidade Federal do Rio Grande do Norte（北里奥格兰德联邦大学）；Millennium Institute for Subatomic Physics at High-Energy Frontier (SAPHIR)（高能前沿子物理千年研究所（SAPHIR））；Universidad de La Serena（拉塞雷纳大学）
Can LLP detectors probe the reheating temperature? A case study of vector dark matter
Pontificia Universidad Católica de Chile（智利天主教 Pontificia 大学）；Millennium Institute for Subatomic Physics at the High Energy Frontier (SAPHIR)（高能前沿亚原子物理千年研究所 (SAPHIR)）；Hefei University of Technology（合肥工业大学）
Reheating the FCC: Probing Early Matter Domination with Long-Lived Particles
New York University Abu Dhabi（阿布扎比纽约大学）；Pontificia Universidad Católica de Chile（智利天主教 Pontificia 大学）；Millennium Institute for Subatomic Physics at the High Energy Frontier (SAPHIR)（高能前沿亚原子物理千年研究所 (SAPHIR)）
