2025年紫金山暗物质研讨会

17 Oct 2025, 09:00 → 21 Oct 2025, 17:00 Asia/Shanghai

第1会议室 (烟台东山宾馆 6 号楼)

尊敬的各位同仁：

        暗物质研究是当代基础科学的核心议题之一，探索暗物质本质将进一步深化我们对物质起源、物理规律及宇宙演化的认知。近年来，我国在暗物质研究领域取得了国际领先的成果：成功发射首颗暗物质科学卫星DAMPE，建成世界最深地下实验室——锦屏地下实验室，开展CDEX 和PandaX 直接探测实验，利用FAST 射电望远镜研究暗物质属性，并在理论和暗物质探测领域涌现出一批突破性进展。为促进学科交叉、推动国内外合作，我们特举办紫金山暗物质研讨会。本系列研讨会由中国科学院暗物质与空间天文重点实验室2019 年发起，之后由南京师范大学在2023 年、南京大学于2024 年陆续举办。现已成为国内暗物质领域推动粒子理论、实验物理与天文观测等学科交叉的重要学术交流平台。

        为交流最新科研成果，我们将于2025年10月17日至21日在山东烟台举办2025年紫金山暗物质研讨会，诚邀本领域的实验和理论同行，共同探讨最新的暗物质探测结果、暗物质理论模型进展、新的暗物质探测方法、与暗物质相关的新物理研究进展，开展广泛而深入的学术讨论与思想碰撞，进一步促进理论物理与实验物理的融合，以期开启更多富有成效的科学合作，并取得更多有意义的研究成果。

        本次会议由紫金山天文台和烟台大学共同举办，烟台大学承办。让我们在金秋十月相聚山海烟台，共探物理前沿！

会议基本信息：

会议地点：烟台东山宾馆 5 号楼

会议时间：2025年10月17日-21日（17日报到，18-20日会议，21日离会）

会议注册：截止日期为2025年9月30日。

注册费用：研究人员及博士后：1500元/人，学生及其他人员：1000元/人

食宿安排：本次会议统⼀安排住宿，会议期间交通费和⻝宿费⾃理。

会议组委会：

范一中  紫金山天文台

袁   强   紫金山天文台

蔡岳霖  紫金山天文台

武   雷  南京师范大学

刘佐伟  南京大学

祝   斌   烟台大学

地方组委会：李营，祝斌，刘学文，郭书源

会议联系人：祝斌 (18354570274, zhubin@mail.nankai.edu.cn)，刘学文 (13102192035, xuewenliu@ytu.edu.cn)，郭书源 (18562180936, shyuanguo@ytu.edu.cn)

 

2025年紫金山暗物质研讨会通知.pdf

2025紫金山暗物质研讨会合影.jpg

2026年紫金山暗物质研讨会.pdf

Friday 17 October

14:00 注册/报到

18:00 晚餐

Saturday 18 October

开幕式

Convener: Prof. 营 李 (烟台大学)

Session 1

Convener: Prof. 宇峰 周 (中科院理论物理所)

1 Recent status and prospects of CDEX @CJPL

CDEX实验

Speaker: Prof. 丽桃 杨 (清华大学)

2 PandaX实验进展

PandaX实验

Speaker: Prof. 月 孟 (上海交通大学)

3 XENON实验进展

XENON实验

Speaker: Prof. 飞 高 (清华大学)

4 Direct observation of Migdal effect

The Migdal effect, a phenomenon in which a nucleus emits an electron following a perturbation, is considered one of the most sensitive methods for detecting sub-GeV dark matter to date. However, for over 80 years, direct observational evidence has been lacking. This presentation will showcase the gas pixel detector we designed for the direct observation of the Migdal effect, along with the experiments and results obtained using neutron beams. We will report the first direct observation of the Migdal effect in neutral beam collisions, as well as the measurement of its cross-section.

Speaker: Prof. 倩 刘 (中国科学院大学)

10:20 茶歇

Session 2

Convener: Prof. 金民 杨

5 看得明，悟得空：DAMPE观测进展及VLAST计划

DAMPE and VLAST实验组

Speaker: Xiang LI (PMO)

DAMPE&VLAST-李翔.pdf

6 纠缠、场与计算

Speaker: Prof. 庆宏 曹 (北京大学)

7 Atomic Effects in Dark Matter Scattering

Speaker: Prof. 韶锋 葛 (上海交通大学)

251018_烟台.pdf

11:50 午餐

Session 3

Convener: Prof. 田军 李

8 General Spin Dark Matter Effective Theories

Speaker: Prof. 江浩 于 (中科院理论物理研究所)

9 Dark Photon Dark Matter Detection with Radio Telescopes

Speaker: Prof. 佳 刘 (北京大学)

10 Probing Dark Matter with Gravitational-Wave Laser Interferometers in Space

Speaker: Prof. 勇 汤 (中国科学院大学)

11 Dark Photon Oscillations in Waveguide

Speaker: Prof. 雯宇 王 (北京工业大学)

12 Axion dark matter from topological defects

Speaker: Prof. 立功 边 (重庆大学)

13 Probing sub-GeV dark matter via cosmic ray cooling in active galactic nuclei

Speaker: Prof. 致廷 卢 (南京师范大学)

15:40 茶歇

Session 4

Convener: Prof. 雷 武

14 New physics v.s. nuclear physics in the precision era of neutrino physics

Speaker: Prof. 玉峰 李 (中国科学院高能物理研究所)

15 RECODE program for reactor neutrino CEvNS detection and Dark Matter

Speaker: Prof. 永成 吴 (南京师范大学)

16 Probing nonthermal dark matter through large-scale structure observations

Speaker: Prof. 成成 韩 (中山大学)

17 Focusing the Axion Wind with Ferrite Flux Concentrators

Axion dark matter may couple to fermion spins through an effective oscillating magnetic field, the ``axion wind". Existing approaches for detecting axion wind via axion-electron coupling face sensitivity limitations due to the extremely weak pseudomagnetic field generated, typically a few times $10^{-18}$ tesla for $g_{ae} \sim 10^{-10}$. We propose to use ferrimagnetic flux concentrators to amplify the pseudomagnetic field into a genuine magnetic field, which can then be measured using general precision magnetometry techniques.
This greatly expands the experimental possibilities beyond conventional methods that rely on detecting small transverse magnetic fields from spin precession induced by axion wind.
Here we utilize the libration mode of a levitated ferromagnet, which can achieve sub-femtotesla sensitivity, enabling detection of axion-electron coupling strengths $g_{ae} \lesssim 10^{-11}$ in the frequency range $1-500$ Hz.

Speaker: Prof. Christina Gao (南方科技大学)

18 Dark U(1) sector with concrete gravitational wave signals

U(1) dark sectors accommodating viable dark matter candidate(s) will be discussed, including the evolution of dark particles, interplay between multiple hidden sectors, possible extended neutrino sectors, and gravitational wave generations. When the additional U(1) symmetry undergoes spontaneous breaking, the dark sector often exhibits a characteristic phase transition pattern capable of producing detectable gravitational wave signals. A gauge-invariant formulation of the dark Higgs associated with the phase transition will be discussed in detail.

Speaker: Prof. 万哲 冯 (天津大学)

18:30 晚宴

Sunday 19 October

Session 5

Convener: Prof. 云贵 龚

19 Universal laws of subhalos arising from unbiased accretion

Many universal yet simple laws have been discovered describing the distributions of subhalos, including their initial and final mass functions and spatial distributions. Validating the fidelity of these laws against numerical effects and extending them to different cosmologies require physical understanding of their origins. In this talk, I will introduce an extremely simple idea to unify the understanding of these universal laws, assuming that subhalo progenitors are accreted unbiasedly from the surrounding environment. I will also introduce the extension of subhalo distribution laws to different cosmologies, different dark matter species and different levels of subhalos, and respond to recent challenges on artificial disruptions of subhalos according to our physical understanding of subhalo evolution.

Speaker: Prof. 家信 韩

subhalo-Valencia.pptx

20 Unexpected clustering pattern in dwarf galaxies challenges formation models

Speaker: Prof. 慧元 王 (中国科技大学)

21 Dynamical evolutions in globular clusters and dwarf galaxies

We present a new two-fluid conduction scheme to simulate the evolution of an isolated, self-gravitating, equilibrium cluster of stars and collisionless dark matter on secular (gravothermal) timescales. We integrate the equations in Lagrangian coordinates via a second-order, semi-implicit algorithm, which is unconditionally stable when the mass of the lighter species is much less than that of the heavier species. The method can be straightforwardly generalized to handle a multispecies system with a population of stars or components beyond collisionless dark matter and stars. We apply the method to simulate the dynamical evolution of stellar-dark matter systems, exploring the consequences of mass segregation and gravothermal core collapse, and assessing those effects for observed globular clusters and dwarf galaxies in the Local Volume.

Speaker: Prof. 益鸣 钟 (香港城市大学)

22 Formation of the Little Red Dots from the Core-collapse of Self-interacting Dark Matter Halos

Speaker: Prof. 方周 姜 (北京大学)

23 Mapping Dark Matter in the Milky Way

Speaker: Prof. 岚 张 (国家天文台)

10:10 茶歇

Session 6

Convener: Prof. 效军 毕

24 太阳邻域的暗物质粒子速度分布及其对暗物质粒子探测实验的影响

前人的工作大多默认太阳邻域暗物质的速度服从麦克斯韦-玻尔兹曼分布，而近些年来对银河系早期主并合事件的研究表明，真实的速度分布会一定程度偏离标准暗晕模型，这对暗物质直接探测实验中的年度调制效应和排除曲线有一定的影响，从而影响对实验结果的解读。

Speaker: Juntai Shen (上海交通大学)

25 The impact of baryons on dark matter mini-haloes

Speaker: Prof. 世鸿 廖 (国家天文台)

26 Heating effects of fuzzy dark matter in galaxies

Speaker: Prof. Peng-Fei Yin (Institute of High Energy)

27 Detection of ALPs with black hole superradiance

Speaker: Prof. 宏 张 (山东大学)

12:00 午餐

Session 7

Convener: Prof. 俊杰 曹

28 Supernova Constraints on Lepton Flavor Violating Axions

Speaker: Prof. 佐伟 刘 (南京大学)

29 Novel Light Dark Matter Detection with Quantum Parity Detector Using Qubit Arrays

Speaker: Prof. Ningqiang Song (中科院理论物理所)

30 Searching for ALP DM in Alkali-Noble-Gas Haloscopes

Speaker: Prof. 小平 王 (北京航空航天大学)

31 Axion Star Tidal Effects and Bosenova

Speaker: Prof. 宇 高 (高能所)

Axion Tidal Effects and Bosenova_Yantai_2025_10_19.pdf

32 Loop-level lepton flavor violation in the left-right symmetric model

Speaker: Prof. 永超 张 (东南大学)

33 Constraints on Strongly-Interacting Dark Matter from the James Webb Space Telescope

Direct detection searches for dark matter are insensitive to dark matter particles that have large interactions with ordinary matter, which are stopped in the atmosphere or the Earth’s crust before reaching terrestrial detectors. We use “dark” calibration images from the James Webb Space Telescope to derive novel constraints on sub-GeV dark matter candidates that scatter off electrons. In this talk, I will show that for a 0.4% subcomponent of dark matter that interacts with an ultralight dark photon, we disfavor all previously allowed parameter space at high cross sections, and constrain some parameter regions for subcomponent fractions as low as ∼0.01%.

Speaker: Prof. 佩之 杜 (中国科学技术大学)

Yantai_JWST_DM.pdf

15:40 茶歇

Session 8

Convener: Prof. 岳霖 蔡

34 Gravitational wave spectrums arising from dark matters

Speaker: Prof. 伟 晁 (北京师范大学)

2025-10-19-chaowei.pdf

35 超重暗物质的产生新机制及其引力波信号

Speaker: Prof. 发朋 黄 (中山大学)

36 Glueball Dark Matter

We explore a generic class of composite dark matter candidates arising from confining dark sectors, where phase transitions—especially deconfinement-confinement and chiral symmetry breaking—can generate stochastic gravitational waves. Using a combination of lattice results and effective field theory approaches such as the Polyakov Loop and PNJL models, we analyze the dynamics of these phase transitions and demonstrate that the resulting gravitational wave signals are highly sensitive to the fermionic content and representation in the dark sector. These signals are significantly enhanced near conformal symmetry and may be detectable by upcoming experiments such as DECIGO and the Big Bang Observer.
As a concrete realization, we focus on glueball dark matter arising from a pure Yang-Mills sector, where glueballs develop axion-like couplings to photons through radiative effects induced by heavy fermion portals. These glueball ALPs (GALPs) feature a coupling-mass relation determined by two fundamental scales: the dark fermion mass and the confinement scale. Without requiring fine-tuning or large mass assumptions, GALPs naturally populate previously unexplored ALP parameter space with suppressed electromagnetic interactions. Importantly, our framework yields a robust prediction for the GALP relic abundance—an order of magnitude below previous estimates—providing a new benchmark for both cosmological modeling and future detection strategies.

Speaker: Prof. 志伟 王 (电子科大)

37 Searching for long-lived particles at Belle II

Searching for long-lived particles (LLPs) has emerged as an important research direction in the quest for physics beyond the Standard Model. Such searches can be performed at various terrestrial facilities including colliders, beam-dump experiments, and neutrino experiments. In this talk, I will focus on the ongoing Belle II experiment at the SuperKEKB collider in Tsukuba, Japan. I will present a series of phenomenological studies on light LLPs at Belle II, illustrating the experiment's discovery potential. Different theoretical models, production mechanisms, and experimental signatures will be discussed, along with the projected sensitivities.

Speaker: Prof. Zeren Simon (泽人) Wang (王) (合肥工业大学)

llp_belleII.pdf

38 Dilution Effect on Freeze-in Dark Matter from a Phase Transition

Speaker: Prof. 阳 张 (河南师范大学)

17:50 晚餐

Monday 20 October

session 9

Convener: Prof. 大能 杨

39 Supernova cooling from neutrino-devouring dark matter

Speaker: 宇根 林

40 Shedding light on dark matter with gravitational waves: searches in the first part of the fourth observing run of LIGO-Virgo-KAGRA

Speaker: 迈 乔

41 Search for ultralight electronphilic axion-like dark matter particles with ferromagnetic torsional oscillator

Speaker: 春龙 李

42 Probing Light Dark Matter with Cosmic Gravitational Focusing

Speaker: 亮 谭

43 利用穆斯堡尔效应搜寻超轻暗物质的实验方案

Speaker: 朋龙 张

10:10 茶歇

session 10

Convener: Prof. 磊 王

44 Axion and Dark Photon in the Quantum Electromagnetodynamics Framework

Speaker: 瑞珈 张

45 The Bubble Wall Velocity in Local Thermal Equilibrium and Energy Budget with Full Effective Potential

Speaker: 宏昕 王

46 Observation of Dwarf Galaxies and Fuzzy Dark Matter

Speaker: 玉明 杨

47 Scrutinizing the impact of the solar modulation on AMS-02 antiproton excess

Speaker: 骁 王

12:00 午餐

session 11

Convener: Prof. 木拉提 阿不都艾尼

48 Superradiant dark matter production from primordial black holes: Impact of multiple modes and gravitational wave emission

Speaker: 拿云 贾

49 Beyond Collisionless Cold Dark Matter: Observational Clues to Self-Interacting Dark Matter

Speaker: 思媛 侯

50 Local Dark Matter Density: On the Origin of the Inconsistency Between Thin- and Thick-Disk Tracers and the Validity of the Vertical Jeans Method

Speaker: Lily Zhang

51 基于LAMOST K 巨星样本的银河系质量估计

Speaker: 垠 吴

52 Smoking gun signature from axion and the constraints with radio telescopes

Speaker: 子煊 刘

53 紫金山暗物质研讨会2026宣讲

Speaker: Prof. 木拉提 阿不都艾尼 (新疆大学)

16:00 茶歇

18:00 晚餐

Tuesday 21 October

09:00 离会